Remove legacy properties from java_sdk_library_import

The legacy usages have all been updated so the legacy properties
can be safely removed. The Libs property is kept so it can be used to
specify properties common to all scopes.

Bug: 148080325
Test: m droid
      TARGET_BUILD_APPS=Camera2 m

Change-Id: I252ebbedbb463db3c7346e86d86b5880eea76fe9