* gas/mips/beq.d: Comment out branches to undefined symbols,

* gas/mips/beq.d: Comment out branches to undefined symbols,
no longer supported.
* gas/mips/beq.s: Likewise.
* gas/mips/bge.d: Likewise.
* gas/mips/bge.s: Likewise.
* gas/mips/bgeu.d: Likewise.
* gas/mips/bgeu.s: Likewise.
* gas/mips/blt.d: Likewise.
* gas/mips/blt.s: Likewise.
* gas/mips/bltu.d: Likewise.
* gas/mips/bltu.s: Likewise.
* gas/mips/mips.exp: Change branch-misc-2 test to run_list_test.
* gas/mips/branch-misc-2.d: Removed.
* gas/mips/branch-misc-2.s: Added branches to undefined symbols.
* gas/mips/branch-misc-2.l: New.