[AArch64] [-mtune cleanup 4/5] Remove "example-1", "example-2" tuning options.

[AArch64] [-mtune cleanup 4/5] Remove "example-1", "example-2" tuning options.

gcc/
	* config/aarch64/aarch64-cores.def (example-1): Remove.
	(example-2): Likewise.
	* config/aarch64/aarch64-tune.md: Regenerate.
	* config/aarch64/aarch64.md: Do not include "large.md" or "small.md".
	(generic_sched): Remove "large", "small".
	* config/aarch64/large.md: Delete.
	* config/aarch64/small.md: Delete.

gcc/testsuite/
	* gcc.target/aarch64/cpu-diagnostics-2.c: Change "-mcpu="
	to "cortex-a53".
	* gcc.target/aarch64/cpu-diagnostics-3.c: Change "-mcpu="
	to "cortex-a53".

From-SVN: r204784