Revert "adb: append the libwinpthread COPYING to adb's NOTICE."

This reverts commit 6d05af7615ddb03940e1c34e4e188b8f7fbbd33e.

Reason for revert: Now Soong can handle NOTICE files for static libraries.

Bug: 36073965
Test: mma + visual check
Change-Id: I52ebd3518f4d15800f878a6401df2c3a2d6713eb
1 file changed