* gdb.base/default.exp: Remove obsolete code.

* gdb.base/default.exp: Remove obsolete code.
* gdb.c++/misc.exp: Ditto.  Update copyright.
* gdb.c++/cplusfuncs.exp: Ditto.  Update copyright.
* gdb.base/whatis.exp: Ditto.  Update copyright.
* gdb.base/scope.exp: Ditto.  Update copyright.
* gdb.base/ptype.exp: Ditto.  Update copyright.
* gdb.base/printcmds.exp: Ditto.  Update copyright.
* gdb.base/opaque.exp: Ditto.  Update copyright.
* gdb.base/list.exp: Ditto.
* gdb.base/funcargs.exp: Ditto.  Update copyright.
* gdb.hp/gdb.threads-hp/usrthbasic.c: Delete.
* gdb.hp/gdb.threads-hp/usrthbasic.exp: Delete.
* gdb.hp/gdb.threads-hp/usrthcore.c: Delete.
* gdb.hp/gdb.threads-hp/usrthcore.exp: Delete.
* gdb.hp/gdb.threads-hp/usrthfork.c: Delete.
* gdb.hp/gdb.threads-hp/usrthfork.exp: Delete.