Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

BUG=161896447

Change-Id: Ib2eece23261c496172d4f3c5d0a8477d7195896f
diff --git a/services/surfaceflinger/Scheduler/DispSync.cpp b/services/surfaceflinger/Scheduler/DispSync.cpp
index 0c94052..04b5241 100644
--- a/services/surfaceflinger/Scheduler/DispSync.cpp
+++ b/services/surfaceflinger/Scheduler/DispSync.cpp
@@ -331,7 +331,7 @@
         return nextEventTime;
     }
 
-    // Sanity check that the duration is close enough in length to a period without
+    // Check that the duration is close enough in length to a period without
     // falling into double-rate vsyncs.
     bool isCloseToPeriod(nsecs_t duration) {
         // Ratio of 3/5 is arbitrary, but it must be greater than 1/2.
diff --git a/services/surfaceflinger/Scheduler/DispSync.h b/services/surfaceflinger/Scheduler/DispSync.h
index 3e33c7e..0822266 100644
--- a/services/surfaceflinger/Scheduler/DispSync.h
+++ b/services/surfaceflinger/Scheduler/DispSync.h
@@ -233,7 +233,7 @@
 
     // mZeroErrSamplesCount keeps track of how many times in a row there were
     // zero timestamps available in the mPresentFences array.
-    // Used to sanity check that we are able to calculate the model error.
+    // Used to check that we are able to calculate the model error.
     size_t mZeroErrSamplesCount;
 
     // Whether we have updated the vsync event model since the last resync.