private void removeRequests(Collection requestsToRemove) {
      if (!requestsToRemove.isEmpty()) {
        synchronized (this) {
          pendingRequests.removeAll(requestsToRemove);
        }
        dlock.getStats().incPendingRequests(-requestsToRemove.size());
      }
    }
Remove all the specified pending requests.
<p>
Caller must synchronize on this grant token.

@param requestsToRemove the pending requests to remove guarded.By this
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockGrantor.java