Remove SkMin32/SkMax32

Use std::max and std::min instead

Change-Id: I7fd2626ea9ea8ea09c709ff962523ca3de2f8a16
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269136
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 3bf04f5..4c9aaeb 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -7,6 +7,7 @@
 Milestone 82
 
 <Insert new notes here- top is most recent.>
+  * Removed SkMax32 and SkMin32.
   * Removed SkMaxScalar and SkMinScalar.
 
   * SkColorSetA now warns if the result is unused.