remove redundant symbols

Change-Id: I05314e07b441cb0e8d6b4f62be94a2109895d8cb
Signed-off-by: fengjinlan <fengjinlan@xiaomi.com>
diff --git a/services/audiopolicy/engine/common/src/ProductStrategy.cpp b/services/audiopolicy/engine/common/src/ProductStrategy.cpp
index 1d3ad1c..0d25955 100644
--- a/services/audiopolicy/engine/common/src/ProductStrategy.cpp
+++ b/services/audiopolicy/engine/common/src/ProductStrategy.cpp
@@ -155,7 +155,7 @@
             return iter.second->getId();
         }
         if (score > matchScore) {
-            bestStrategyOrdefault = iter.second->getId();;
+            bestStrategyOrdefault = iter.second->getId();
             matchScore = score;
         }
     }