tree-diff: remove special-case diff-emitting code for empty-tree cases

diff --git a/t/t4120-apply-popt.sh b/t/t4120-apply-popt.sh
index c5fecdfed43dc5682307dd0fdb66ddd78dece056..497b62868d4aa0f81c62178ee9b1a5a108b89c0d 100755 (executable)
--- a/t/t4120-apply-popt.sh
+++ b/t/t4120-apply-popt.sh
@@ -6,7 +6,6 @@
 test_description='git apply -p handling.'
 
 . ./test-lib.sh
-. "$TEST_DIRECTORY"/lib-prereq-FILEMODE.sh
 
 test_expect_success setup '
        mkdir sub &&