BaseTools/VfrCompile: Remove framework VFR support

BaseTools/VfrCompile: Remove framework VFR support

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1464

Currently there is no usage of framework VFR,
remove the support from VfrCompile.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>