remove unused cruft

interface/src/Application.cpp

@@ -6186,8 +6186,6 @@ void Application::update(float deltaTime) {
             bool enableInterstitial = DependencyManager::get<NodeList>()->getDomainHandler().getInterstitialModeEnabled();
 
             if (gpuTextureMemSizeStable() || !enableInterstitial) {
-                // we've received a new full-scene octree stats packet, or it's been long enough to try again anyway
-                _lastPhysicsCheckTime = now;
                 _fullSceneCounterAtLastPhysicsCheck = _fullSceneReceivedCounter;
                 _lastQueriedViews.clear();  // Force new view.
 

interface/src/Application.h

@@ -786,8 +786,6 @@ private:
     qint64 _gpuTextureMemSizeStabilityCount { 0 };
     qint64 _gpuTextureMemSizeAtLastCheck { 0 };
 
-    quint64 _lastPhysicsCheckTime { usecTimestampNow() }; // when did we last check to see if physics was ready
-
     bool _keyboardDeviceHasFocus { true };
 
     ConnectionMonitor _connectionMonitor;