ci: Remove testing with bad proxies

One of our CI jobs is testing that Gitaly works correctly when invalid
proxies have been configured. This test only checks the `rubyserver`
package though, which is about to be removed. The tests are thus not
required anymore.

Remove the CI jobs and the infrastructure supporting it.

1 files changed, 0 insertions, 6 deletions

diff --git a/_support/bad-proxies b/_support/bad-proxies
deleted file mode 100755
index fceca168d..000000000
--- a/_support/bad-proxies
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/sh
-
-export http_proxy=http://invalid
-export https_proxy=https://invalid
-
-exec "$@"