tests: remove all uses of test_i18cmp

Finish the removal I started in 1108cea7f8 (tests: remove most uses
of test_i18ncmp, 2021-02-11). At that time the function wasn't removed
due to disruption with in-flight changes, remove the occurrences that
have landed since then.

As of writing this there are no test_i18ncmp uses between "master" and
"seen", so let's also remove the function to finally put it to rest.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3437-rebase-fixup-options.sh

@@ -157,7 +157,7 @@ test_expect_success 'sequence of fixup, fixup -C & squash --signoff works' '
 		git -c commit.status=false rebase -ik --signoff A &&
 	git diff-tree --exit-code --patch HEAD B3 -- &&
 	test_cmp_rev HEAD^ A &&
-	test_i18ncmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
+	test_cmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
 		actual-squash-message
 '
 
@@ -191,7 +191,7 @@ test_expect_success 'sequence squash, fixup & fixup -c gives combined message' '
 	FAKE_LINES="1 squash 2 fixup 3 fixup_-c 4" \
 		FAKE_MESSAGE_COPY=actual-combined-message \
 		git -c commit.status=false rebase -i A &&
-	test_i18ncmp "$TEST_DIRECTORY/t3437/expected-combined-message" \
+	test_cmp "$TEST_DIRECTORY/t3437/expected-combined-message" \
 		actual-combined-message &&
 	test_cmp_rev HEAD^ A
 '
@@ -204,7 +204,7 @@ test_expect_success 'fixup -C works upon --autosquash with amend!' '
 						--signoff A &&
 	git diff-tree --exit-code --patch HEAD B3 -- &&
 	test_cmp_rev HEAD^ A &&
-	test_i18ncmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
+	test_cmp "$TEST_DIRECTORY/t3437/expected-squash-message" \
 		actual-squash-message
 '
 

t/t6300-for-each-ref.sh

@@ -945,9 +945,9 @@ test_failing_trailer_option () {
 	test_expect_success "$title" '
 		# error message cannot be checked under i18n
 		test_must_fail git for-each-ref --format="%($option)" refs/heads/main 2>actual &&
-		test_i18ncmp expect actual &&
+		test_cmp expect actual &&
 		test_must_fail git for-each-ref --format="%(contents:$option)" refs/heads/main 2>actual &&
-		test_i18ncmp expect actual
+		test_cmp expect actual
 	'
 }
 
@@ -966,7 +966,7 @@ test_expect_success 'if arguments, %(contents:trailers) shows error if colon is
 	fatal: unrecognized %(contents) argument: trailersonly
 	EOF
 	test_must_fail git for-each-ref --format="%(contents:trailersonly)" 2>actual &&
-	test_i18ncmp expect actual
+	test_cmp expect actual
 '
 
 test_expect_success 'basic atom: head contents:trailers' '

t/test-lib-functions.sh

@@ -1025,13 +1025,6 @@ test_cmp_bin () {
 	cmp "$@"
 }
 
-# Wrapper for test_cmp which used to be used for
-# GIT_TEST_GETTEXT_POISON=false. Only here as a shim for other
-# in-flight changes. Should not be used and will be removed soon.
-test_i18ncmp () {
-	test_cmp "$@"
-}
-
 # Wrapper for grep which used to be used for
 # GIT_TEST_GETTEXT_POISON=false. Only here as a shim for other
 # in-flight changes. Should not be used and will be removed soon.