Rollback patch 14537 & 14538, because patch 14537 is not tested by Laszlo Ersek, but i wrote it.

Signed-off-by: Eric Dong <eric.dong@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OvmfPkg@14539 6f19259b-4bc3-4df7-8a09-765794883524
Update OVMF platform to use new display engine and browser.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com> 
Tested-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OvmfPkg@14541 6f19259b-4bc3-4df7-8a09-765794883524