t: remove unexpected SANITIZE_LEAK variables

As of 1fc7ddf (test-lib: unconditionally enable leak checking,
2024-11-20), both the `GIT_TEST_PASSING_SANITIZE_LEAK` and
`TEST_PASSES_SANITIZE_LEAK` variables no longer have any meaning, the
leak checks are enabled by default. However, some newly added tests
include them by mistake. Let's clean this up.

Signed-off-by: Karthik Nayak <[email protected]>
Acked-by: Justin Tobler <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: KarthikNayak

t/perf/p5313-pack-objects.sh

@@ -3,9 +3,6 @@
 test_description='Tests pack performance using bitmaps'
 . ./perf-lib.sh
 
-GIT_TEST_PASSING_SANITIZE_LEAK=0
-export GIT_TEST_PASSING_SANITIZE_LEAK
-
 test_perf_large_repo
 
 test_expect_success 'create rev input' '

t/perf/p5314-name-hash.sh

@@ -3,9 +3,6 @@
 test_description='Tests pack performance using bitmaps'
 . ./perf-lib.sh
 
-GIT_TEST_PASSING_SANITIZE_LEAK=0
-export GIT_TEST_PASSING_SANITIZE_LEAK
-
 test_perf_large_repo
 
 test_size 'paths at head' '

t/t6601-path-walk.sh

@@ -1,7 +1,5 @@
 #!/bin/sh
 
-TEST_PASSES_SANITIZE_LEAK=true
-
 test_description='direct path-walk API tests'
 
 . ./test-lib.sh