Revert "Clean up hasSystemFeature binder cache"

Bug: 148370985

This reverts commit be9ba356aa6cc73af0472cb4bdf6bd0e1d2bf5fa.

Reason for revert: The change used <>, which is  supported in Java 9 but not in Java 8.

Change-Id: I06304dead0a54b33b37d6661f9446cc797785bf4
2 files changed