Remove variants of vdm flag library

These are increasing code complexity and are causing memory leaks due to
multiple loading in tests.

Bug: 352596575
Flag: EXEMPT bugfix
Test: TEST=inputflinger_tests; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: I76f4a1751644245f8caffdc1b3e03023ed5f665a
1 file changed