Delete GrGpu::querySampleLocations

Change-Id: I9f02b1e07bf7a20a90f259d94ca58c26d2783ea6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/392993
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
11 files changed