Update language to comply with Android's inclusive language guidance
Test: m checkbuild

Change-Id: I3e045e8bae5cba900f94357b8446a0aae4139acf
diff --git a/media/libstagefright/include/media/stagefright/MediaBuffer.h b/media/libstagefright/include/media/stagefright/MediaBuffer.h
index 2c03f27..f070aac 100644
--- a/media/libstagefright/include/media/stagefright/MediaBuffer.h
+++ b/media/libstagefright/include/media/stagefright/MediaBuffer.h
@@ -105,7 +105,6 @@
         if (mMemory.get() == nullptr || mMemory->unsecurePointer() == nullptr) return 0;
         int32_t remoteRefcount =
                 reinterpret_cast<SharedControl *>(mMemory->unsecurePointer())->getRemoteRefcount();
-        // Sanity check so that remoteRefCount() is non-negative.
         return remoteRefcount >= 0 ? remoteRefcount : 0; // do not allow corrupted data.
 #else
         return 0;