- remove patch that was already applied upstream

toolchain/gdb/snapshot/770-debian_vfork-done-spelling.patch

@@ -1,12 +0,0 @@
-diff -ur gdb-6.3.50.20050915/gdb/linux-nat.c gdb-6.3.50.20050915-patched/gdb/linux-nat.c
---- gdb-6.3.50.20050915/gdb/linux-nat.c	2005-09-10 13:11:02.000000000 -0500
-+++ gdb-6.3.50.20050915-patched/gdb/linux-nat.c	2005-09-15 19:57:23.000000000 -0500
-@@ -458,7 +458,7 @@
- 	 generally not encounter vfork (vfork is defined to fork
- 	 in libpthread.so).
- 
--	 The holding part is very easy if we have VFORKDONE events;
-+	 The holding part is very easy if we have VFORK_DONE events;
- 	 but keeping track of both processes is beyond GDB at the
- 	 moment.  So we don't expose the parent to the rest of GDB.
- 	 Instead we quietly hold onto it until such time as we can