Freeing frame map

FileMap memory is never released until application exit

Release it now as the texture is already loaded and the memory
used for the packed resource can be released.

Change-Id: Id08a1e466337b3a0179684eb6a444e18147ee343
Revert "Set some GC parameters only for dalvik"

This reverts commit de4539603e165f8df0d23a21b6a285213d7f712e.

Change-Id: I2fd71b8b8b6e72cdbe929bfc2afe275cb46e6c29