t0021: fix flaky test

t0021.15 creates files, adds them to the index, and commits them. All
this usually happens in a test run within the same second and Git cannot
know if the files have been changed between `add` and `commit`.  Thus,
Git has to run the clean filter in both operations. Sometimes these
invocations spread over two different seconds and Git can infer that the
files were not changed between `add` and `commit` based on their
modification timestamp. The test would fail as it expects the filter
invocation. Remove this expectation to make the test stable.

Signed-off-by: Lars Schneider <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: larsxschneider

t/t0021-conversion.sh

@@ -376,22 +376,7 @@ test_expect_success PERL 'required process filter should filter data' '
 		EOF
 		test_cmp_count expected.log rot13-filter.log &&
 
-		filter_git commit . -m "test commit 2" &&
-		cat >expected.log <<-EOF &&
-			START
-			init handshake complete
-			IN: clean test.r $S [OK] -- OUT: $S . [OK]
-			IN: clean test2.r $S2 [OK] -- OUT: $S2 . [OK]
-			IN: clean test4-empty.r 0 [OK] -- OUT: 0  [OK]
-			IN: clean testsubdir/test3 '\''sq'\'',\$x=.r $S3 [OK] -- OUT: $S3 . [OK]
-			IN: clean test.r $S [OK] -- OUT: $S . [OK]
-			IN: clean test2.r $S2 [OK] -- OUT: $S2 . [OK]
-			IN: clean test4-empty.r 0 [OK] -- OUT: 0  [OK]
-			IN: clean testsubdir/test3 '\''sq'\'',\$x=.r $S3 [OK] -- OUT: $S3 . [OK]
-			STOP
-		EOF
-		test_cmp_count expected.log rot13-filter.log &&
-
+		git commit -m "test commit 2" &&
 		rm -f test2.r "testsubdir/test3 '\''sq'\'',\$x=.r" &&
 
 		filter_git checkout --quiet --no-progress . &&