* gcc.target/arm/pr40657-2.c: Remove -march option and unneeded
	dg-prune-output.
	* gcc.target/arm/pr42235.c: Likewise.
	* gcc.target/arm/pr42495.c: Likewise.
	* gcc.target/arm/pr42574.c: Likewise.
	* gcc.target/arm/thumb-branch1.c: Likewise.

From-SVN: r175997