Remove BdsLibConnectConsoleVariableWithoutDispatch() and enhance BdsLibConnectDevicePath() to only call gDS->Dispatch() when the current TPL is TPL_APPLICATION

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Chao B Zhang <chao.b.zhang@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14211 6f19259b-4bc3-4df7-8a09-765794883524