Merge branch 'jk/skip-http-tests-under-no-curl' into maint

Test clean-up.

* jk/skip-http-tests-under-no-curl:
  tests: skip dav http-push tests under NO_EXPAT=NoThanks
  t/lib-httpd.sh: skip tests if NO_CURL is defined

t/t5541-http-push-smart.sh

@@ -6,11 +6,6 @@
 test_description='test smart pushing over http via http-backend'
 . ./test-lib.sh
 
-if test -n "$NO_CURL"; then
-	skip_all='skipping test, git built without http support'
-	test_done
-fi
-
 ROOT_PATH="$PWD"
 . "$TEST_DIRECTORY"/lib-gpg.sh
 . "$TEST_DIRECTORY"/lib-httpd.sh