Roll back unnecessary wpr & sha1 files

This CL removes unnecessary wpr & sha1 files for leak detection folder.
leak_detection_001.wprgo.sha1  leak_detection_002.wprgo.sha1  leak_detection.json will be the ones that will remain.

Bug: 
Change-Id: I8a59c7c5c70462a13255075aeeaa209923f5cd6e
Reviewed-on: https://chromium-review.googlesource.com/774352Reviewed-by: Ned Nguyen <nednguyen@google.com>
Reviewed-by: Yuzu Saijo <yuzus@chromium.org>
Commit-Queue: Yuzu Saijo <yuzus@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517286}

tools/perf/contrib/leak_detection/data/leak_detection.json.sha1

-42555f322b1fc395d5681b9cd23ab1d309fc8a82
\ No newline at end of file

tools/perf/contrib/leak_detection/data/leak_detection_000.wprgo.sha1.sha1

-7fa6929651d0dc1afa4216911b51c1ef969cf6c2
\ No newline at end of file

tools/perf/contrib/leak_detection/data/leak_detection_001.wprgo.sha1.sha1

-ada36af217f2d9e9ecda2eaa9a04eda60c11be12
\ No newline at end of file

tools/perf/contrib/leak_detection/data/leak_detection_002.wprgo.sha1.sha1

-cede5761946b987590d93b1e1b3343a36e84fd13
\ No newline at end of file