licenses/mpich: Remove duplicate license.

Bug: https://bugs.gentoo.org/657686

licenses/mpich

@@ -1,39 +0,0 @@
-
-				  COPYRIGHT
-
-The following is a notice of limited availability of the code, and disclaimer
-which must be included in the prologue of the code and in all source listings
-of the code.
-
-Copyright Notice
- + 2002 University of Chicago
-
-Permission is hereby granted to use, reproduce, prepare derivative works, and
-to redistribute to others.  This software was authored by:
-
-Mathematics and Computer Science Division
-Argonne National Laboratory, Argonne IL 60439
-
-(and)
-
-Department of Computer Science
-University of Illinois at Urbana-Champaign
-
-
-			      GOVERNMENT LICENSE
-
-Portions of this material resulted from work developed under a U.S.
-Government Contract and are subject to the following license: the Government
-is granted for itself and others acting on its behalf a paid-up, nonexclusive,
-irrevocable worldwide license in this computer software to reproduce, prepare
-derivative works, and perform publicly and display publicly.
-
-				  DISCLAIMER
-
-This computer code material was prepared, in part, as an account of work
-sponsored by an agency of the United States Government.  Neither the United
-States, nor the University of Chicago, nor any of their employees, makes any
-warranty express or implied, or assumes any legal liability or responsibility
-for the accuracy, completeness, or usefulness of any information, apparatus,
-product, or process disclosed, or represents that its use would not infringe
-privately owned rights.