Tidy gas/configure.tgt

Should have been removed with m68k bsd support.

	* configure.tgt: Remove *-*-bsd* entry.

gas/ChangeLog

+2018-04-18  Alan Modra  <amodra@gmail.com>
+
+	* configure.tgt: Remove *-*-bsd* entry.
+
 2018-04-17 Andrew Sadek  <andrew.sadek.se@gmail.com>
 
 	Microblaze Target: PIC data text relative

gas/configure.tgt

@@ -448,7 +448,6 @@ case ${generic_target} in
   *-*-cloudabi*)			fmt=elf ;;
   *-*-dragonfly*)			fmt=elf em=dragonfly ;;
   *-*-freebsd* | *-*-kfreebsd*-gnu)	fmt=elf em=freebsd ;;
-  *-*-bsd*)				fmt=aout em=sun3 ;;
   *-*-generic)				fmt=generic ;;
   *-*-xray | *-*-hms)			fmt=coff ;;
   *-*-sim)				fmt=coff ;;