Remove accidentally added T10359 blob

This sneaked in via 2325bd4e / D1468 / #4012

This is frustrating... we've added a useless 2.4MiB binary blob to our
Git history which wastes *everyones* bandwidth for eternity
(unless we truncate or rewrite history).

We should add lint-checks and/or a pre-receive commit hook test to prevent
this in future.

testsuite/.gitignore

@@ -1219,6 +1219,7 @@ mk/ghcconfig*_test___spaces_ghc*.exe.mk
 /tests/perf/should_run/T876
 /tests/perf/should_run/T9203
 /tests/perf/should_run/T9339
+/tests/perf/should_run/T10359
 /tests/perf/should_run/lazy-bs-alloc
 /tests/perf/should_run/lazy-bs-alloc.stats
 /tests/perf/should_run/speed.f32