git-patches: Remove leftover patch

Commit 8d4884c01 (Makefile: Upgrade Git to v2.32.0, 2021-06-09) removed
usage of patch pack-bitmap-avoid-traversal-of-uninteresting-tag.patch
in the build, but forgot to remove the patch itself.

Let's do this now.

1 files changed, 0 insertions, 102 deletions

diff --git a/_support/git-patches/pack-bitmap-avoid-traversal-of-uninteresting-tag.patch b/_support/git-patches/pack-bitmap-avoid-traversal-of-uninteresting-tag.patch
deleted file mode 100644
index 03ab856ef..000000000
--- a/_support/git-patches/pack-bitmap-avoid-traversal-of-uninteresting-tag.patch
+++ /dev/null
@@ -1,102 +0,0 @@
-commit 540cdc11adf0574a9a2d52fc687a84a2f4a93ad8
-Author: Patrick Steinhardt <ps@pks.im>
-Date:   Mon Mar 22 13:19:06 2021 +0100
-
-    pack-bitmap: avoid traversal of objects referenced by uninteresting tag
-    
-    When preparing the bitmap walk, we first establish the set of of have
-    and want objects by iterating over the set of pending objects: if an
-    object is marked as uninteresting, it's declared as an object we already
-    have, otherwise as an object we want. These two sets are then used to
-    compute which transitively referenced objects we need to obtain.
-    
-    One special case here are tag objects: when a tag is requested, we
-    resolve it to its first not-tag object and add both resolved objects as
-    well as the tag itself into either the have or want set. Given that the
-    uninteresting-property always propagates to referenced objects, it is
-    clear that if the tag is uninteresting, so are its children and vice
-    versa. But we fail to propagate the flag, which effectively means that
-    referenced objects will always be interesting except for the case where
-    they have already been marked as uninteresting explicitly.
-    
-    This mislabeling does not impact correctness: we now have it in our
-    "wants" set, and given that we later do an `AND NOT` of the bitmaps of
-    "wants" and "haves" sets it is clear that the result must be the same.
-    But we now start to needlessly traverse the tag's referenced objects in
-    case it is uninteresting, even though we know that each referenced
-    object will be uninteresting anyway. In the worst case, this can lead to
-    a complete graph walk just to establish that we do not care for any
-    object.
-    
-    Fix the issue by propagating the `UNINTERESTING` flag to pointees of tag
-    objects and add a benchmark with negative revisions to p5310. This shows
-    some nice performance benefits, tested with linux.git:
-    
-    Test                                                          HEAD~                  HEAD
-    ---------------------------------------------------------------------------------------------------------------
-    5310.3: repack to disk                                        193.18(181.46+16.42)   194.61(183.41+15.83) +0.7%
-    5310.4: simulated clone                                       25.93(24.88+1.05)      25.81(24.73+1.08) -0.5%
-    5310.5: simulated fetch                                       2.64(5.30+0.69)        2.59(5.16+0.65) -1.9%
-    5310.6: pack to file (bitmap)                                 58.75(57.56+6.30)      58.29(57.61+5.73) -0.8%
-    5310.7: rev-list (commits)                                    1.45(1.18+0.26)        1.46(1.22+0.24) +0.7%
-    5310.8: rev-list (objects)                                    15.35(14.22+1.13)      15.30(14.23+1.07) -0.3%
-    5310.9: rev-list with tag negated via --not --all (objects)   22.49(20.93+1.56)      0.11(0.09+0.01) -99.5%
-    5310.10: rev-list with negative tag (objects)                 0.61(0.44+0.16)        0.51(0.35+0.16) -16.4%
-    5310.11: rev-list count with blob:none                        12.15(11.19+0.96)      12.18(11.19+0.99) +0.2%
-    5310.12: rev-list count with blob:limit=1k                    17.77(15.71+2.06)      17.75(15.63+2.12) -0.1%
-    5310.13: rev-list count with tree:0                           1.69(1.31+0.38)        1.68(1.28+0.39) -0.6%
-    5310.14: simulated partial clone                              20.14(19.15+0.98)      19.98(18.93+1.05) -0.8%
-    5310.16: clone (partial bitmap)                               12.78(13.89+1.07)      12.72(13.99+1.01) -0.5%
-    5310.17: pack to file (partial bitmap)                        42.07(45.44+2.72)      41.44(44.66+2.80) -1.5%
-    5310.18: rev-list with tree filter (partial bitmap)           0.44(0.29+0.15)        0.46(0.32+0.14) +4.5%
-    
-    While most benchmarks are probably in the range of noise, the newly
-    added 5310.9 and 5310.10 benchmarks consistenly perform better.
-    
-    Signed-off-by: Patrick Steinhardt <ps@pks.im>.
-    Signed-off-by: Junio C Hamano <gitster@pobox.com>
-
-diff --git a/pack-bitmap.c b/pack-bitmap.c
-index 4077e731e8..2d3bc415da 100644
---- a/pack-bitmap.c
-+++ b/pack-bitmap.c
-@@ -969,6 +969,7 @@ struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs,
- 				object_list_insert(object, &wants);
- 
- 			object = parse_object_or_die(get_tagged_oid(tag), NULL);
-+			object->flags |= (tag->object.flags & UNINTERESTING);
- 		}
- 
- 		if (object->flags & UNINTERESTING)
-diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh
-index b3e725f031..452be01056 100755
---- a/t/perf/p5310-pack-bitmaps.sh
-+++ b/t/perf/p5310-pack-bitmaps.sh
-@@ -15,6 +15,12 @@ test_expect_success 'setup bitmap config' '
- 	git config pack.writebitmaps true
- '
- 
-+# we need to create the tag up front such that it is covered by the repack and
-+# thus by generated bitmaps.
-+test_expect_success 'create tags' '
-+	git tag --message="tag pointing to HEAD" perf-tag HEAD
-+'
-+
- test_perf 'repack to disk' '
- 	git repack -ad
- '
-@@ -43,6 +49,14 @@ test_perf 'rev-list (objects)' '
- 	git rev-list --all --use-bitmap-index --objects >/dev/null
- '
- 
-+test_perf 'rev-list with tag negated via --not --all (objects)' '
-+	git rev-list perf-tag --not --all --use-bitmap-index --objects >/dev/null
-+'
-+
-+test_perf 'rev-list with negative tag (objects)' '
-+	git rev-list HEAD --not perf-tag --use-bitmap-index --objects >/dev/null
-+'
-+
- test_perf 'rev-list count with blob:none' '
- 	git rev-list --use-bitmap-index --count --objects --all \
- 		--filter=blob:none >/dev/null