Disable 2246-trace-stream on debug-gc config

2246-trace-stream is timing out on debug-gc configuration. Temporary
disable while we investigate the issue

Bug: 264844668
Test: art/test.py -t 2246-trace-stream
Change-Id: I2ed60d21671279a1c5694326c2b5a1cef9cf42df
1 file changed