Remove /vendor/lib/modules from file_contexts

Vendor kernel modules were moved to /vendor_dlkm/lib/modules. Let's
remove the old directory /vendor/lib/modules from file_contexts.

Bug: 185184472
Bug: 186777291
Change-Id: I38f1b25cb2d73a804f1cdb113edc9b11f8e516f7
1 file changed