ShellPkg: remove double free operation

This pointer gets free twice and this does not work.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15094 6f19259b-4bc3-4df7-8a09-765794883524
ShellPkg: remove potential memory leak with new apps on old shell

This pointer never gets free when running new apps on the old shell.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15095 6f19259b-4bc3-4df7-8a09-765794883524