[RISCV][committed] Remove spurious newline in ztso sequence

amo-table-ztso-load-3 the coordination branch after merging up the Ztso changes
due to a spurious newline in the output causing scan-function-body to fail.
There's probably an over-zealous .* or similar regexp in the framework.  I
didn't see it in a quick scan, but could have easily missed it.

Regardless, fixing the extraneous newline is easy :-)

gcc/
	* config/riscv/sync-ztso.md (atomic_load_ztso<mode>): Avoid extraenous
	newline.