Revert "tests: skip test_remote_function_connection_w_location (b/525124882)"

This reverts commit 7793a8e.

Author: shuoweil

packages/bigframes/tests/system/small/functions/test_remote_function.py

@@ -168,7 +168,6 @@ def square(x):
     assert_frame_equal(bf_result, pd_result)
 
 
-@pytest.mark.skip(reason="b/525124882: connection with location test failing")
 @pytest.mark.flaky(retries=2, delay=120)
 def test_remote_function_connection_w_location(
     session,