C2Buffer: don't check for right and bottom crop at mapping

When mapping the cropped region, it does not prevent calculation
when right and/or bottom is not aligned.

Bug: 353120096
Test: presubmit
(cherry picked from https://android-review.googlesource.com/q/commit:c4039b0332dce1c4b06f31d247a84f8549413100)
Merged-In: I10841ffa76862adc452c8296190965d64b79d4dd
Change-Id: I10841ffa76862adc452c8296190965d64b79d4dd