Revert "Use the global default cpp_std."

This reverts commit ad434d79398f6493a9d5e14d7f08703d14fe08c8.

Reason for revert: Droidmonitor triggered revert due to build breakage in b/346434347. Will be verifying through ABTD before submission.

Change-Id: I3fc1e2d82ad291b8aecfb6d1cc13b63200251edc
diff --git a/media/codec2/components/hevc/C2SoftHevcDec.h b/media/codec2/components/hevc/C2SoftHevcDec.h
index ff6d371..6abf69e 100644
--- a/media/codec2/components/hevc/C2SoftHevcDec.h
+++ b/media/codec2/components/hevc/C2SoftHevcDec.h
@@ -132,7 +132,7 @@
         VuiColorAspects()
             : primaries(2), transfer(2), coeffs(2), fullRange(0) { }
 
-        bool operator==(const VuiColorAspects &o) const {
+        bool operator==(const VuiColorAspects &o) {
             return primaries == o.primaries && transfer == o.transfer && coeffs == o.coeffs
                     && fullRange == o.fullRange;
         }