revert(3p/git): Revert merge of git upstream at v2.26.2

This causes cgit to serve error pages, which is undesirable.

This reverts commit 5229c9b232, reversing
changes made to f2b211131f.

third_party/git/t/t5545-push-options.sh

@@ -115,7 +115,7 @@ test_expect_success 'push options and submodules' '
 
 	git -C parent submodule add ../upstream workbench &&
 	git -C parent/workbench remote add up ../../upstream &&
-	git -C parent commit -m "add submodule" &&
+	git -C parent commit -m "add submoule" &&
 
 	test_commit -C parent/workbench two &&
 	git -C parent add workbench &&
@@ -278,7 +278,4 @@ test_expect_success 'push options keep quoted characters intact (http)' '
 	test_cmp expect "$HTTPD_DOCUMENT_ROOT_PATH"/upstream.git/hooks/pre-receive.push_options
 '
 
-# DO NOT add non-httpd-specific tests here, because the last part of this
-# test script is only executed when httpd is available and enabled.
-
 test_done