proto mappers clean up (#711)

Author: mkolodezny

src/main/java/com/uber/cadence/internal/compatibility/proto/TypeMapper.java

@@ -49,7 +49,6 @@
 import com.uber.cadence.api.v1.Payload;
 import com.uber.cadence.api.v1.PendingActivityInfo;
 import com.uber.cadence.api.v1.PendingChildExecutionInfo;
-import com.uber.cadence.api.v1.PendingDecisionInfo;
 import com.uber.cadence.api.v1.PollerInfo;
 import com.uber.cadence.api.v1.QueryRejected;
 import com.uber.cadence.api.v1.ResetPointInfo;
@@ -539,19 +538,6 @@ static PendingChildExecutionInfo pendingChildExecutionInfo(
         .build();
   }
 
-  static PendingDecisionInfo pendingDecisionInfo(com.uber.cadence.PendingDecisionInfo t) {
-    if (t == null) {
-      return PendingDecisionInfo.newBuilder().build();
-    }
-    return PendingDecisionInfo.newBuilder()
-        .setState(EnumMapper.pendingDecisionState(t.getState()))
-        .setScheduledTime(unixNanoToTime(t.getScheduledTimestamp()))
-        .setStartedTime(unixNanoToTime(t.getStartedTimestamp()))
-        .setAttempt((int) t.getAttempt())
-        .setOriginalScheduledTime(unixNanoToTime(t.getOriginalScheduledTimestamp()))
-        .build();
-  }
-
   static ActivityLocalDispatchInfo activityLocalDispatchInfo(
       com.uber.cadence.ActivityLocalDispatchInfo t) {
     if (t == null) {