[dxvk] Remove unused trimStagingBuffers method

src/dxvk/dxvk_context.cpp

@@ -2598,10 +2598,6 @@ namespace dxvk {
   }
 
 
-  void DxvkContext::trimStagingBuffers() {
-    m_staging.reset();
-  }
-
   void DxvkContext::beginDebugLabel(VkDebugUtilsLabelEXT *label) {
     if (!m_device->instance()->extensions().extDebugUtils)
       return;

src/dxvk/dxvk_context.h

@@ -1012,15 +1012,6 @@ namespace dxvk {
       const Rc<sync::Signal>&   signal,
             uint64_t            value);
     
-    /**
-     * \brief Trims staging buffers
-     * 
-     * Releases staging buffer resources. Calling
-     * this may be useful if data updates on a
-     * given context are rare.
-     */
-    void trimStagingBuffers();
-   
     /**
      * \brief Begins a debug label region
      * \param [in] label The debug label