Do not set both LOOP_C_INFINITE and LOOP_C_FINITE on vectorized loop

Do not set both LOOP_C_INFINITE and LOOP_C_FINITE on vectorized loop

The setting is likely a typo and was meant to affect the scalar version
but even there LOOP_C_INFINITE is at most an optimization to the
niter analysis.  Clearly setting it on the vectorized loop which we
just versioned to be _not_ infinite is bogus so the following change
removes this.

2021-07-05  Richard Biener  <rguenther@suse.de>

	* tree-vect-loop-manip.c (vect_loop_versioning): Do not
	set LOOP_C_INFINITE on the vectorized loop.