tests: drop prereq `PREPARE_FOR_MAIN_BRANCH` where no longer needed

We introduced the `PREPARE_FOR_MAIN_BRANCH` prereq for the sole purpose
of allowing us to perform the non-trivial adjustments regarding the
`master` -> `main` rename before the automatable ones.

Now that the transition is almost complete, we can stop using it in most
instances. The only two exceptions are t5526 and t9902: at the time of
writing, there are other patches in flight that touch these test
scripts, therefore their transition to `main` is postponed to a later
date.

This patch is the result of this command:

	sed -i 's/PREPARE_FOR_MAIN_BRANCH[ ,]//' t/t[0-9]*.sh &&
	git checkout HEAD -- t/t5526\* t/t9902\*

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 1ad0bbbc53..e7cd4917d1 100755
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -588,7 +588,7 @@ test_expect_success 'stdin fails on unbalanced quotes' '
 	grep "fatal: badly quoted argument: \\\"main" err
 '
 
-test_expect_success PREPARE_FOR_MAIN_BRANCH 'stdin fails on invalid escape' '
+test_expect_success 'stdin fails on invalid escape' '
 	echo "create $a \"ma\zn\"" >stdin &&
 	test_must_fail git update-ref --stdin <stdin 2>err &&
 	grep "fatal: badly quoted argument: \\\"ma\\\\zn\\\"" err
@@ -707,7 +707,7 @@ test_expect_success 'stdin succeeds with quoted argument' '
 	test_cmp expect actual
 '
 
-test_expect_success PREPARE_FOR_MAIN_BRANCH 'stdin succeeds with escaped character' '
+test_expect_success 'stdin succeeds with escaped character' '
 	git update-ref -d $a &&
 	echo "create $a \"ma\\151n\"" >stdin &&
 	git update-ref --stdin <stdin &&