Remove -save-temps from tests using -flto

Remove -save-temps from tests using -flto

The following removes -save-temps that doesn't seem to have any
good reason from tests that also run with -flto added.  That can
cause ltrans files to race with other multilibs tested and I'm
frequently seeing linker complaints that the architecture
doesn't match here.

I'm not sure whether the .ltrans.o files end up in a non gccN/
specific directory or if we end up sharing the same dir for
different multilibs (not sure if it's easily possible to avoid that).

	* gcc.dg/vect/vect-bic-bitmask-2.c: Remove -save-temps.
	* gcc.dg/vect/vect-bic-bitmask-3.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-4.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-5.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-6.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-8.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-9.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-10.c: Likewise.
	* gcc.dg/vect/vect-bic-bitmask-11.c: Likewise.