[d3d11] Remove GetData do-not-flush workaround for Fallout 4

Not needed anymore due to the implicit flush.

src/d3d11/d3d11_context_imm.cpp

@@ -63,12 +63,6 @@ namespace dxvk {
       return E_INVALIDARG;
     }
     
-    // Fallout 4 never actually calls this function without
-    // D3D11_ASYNC_GETDATA_DONOTFLUSH set, which may cause
-    // the game to freeze in certain situations.
-    if (m_parent->TestOption(D3D11Option::DisableGetDataFlagDoNotFlush))
-      GetDataFlags &= ~D3D11_ASYNC_GETDATA_DONOTFLUSH;
-    
     // Flush in order to make sure the query commands get dispatched
     if ((GetDataFlags & D3D11_ASYNC_GETDATA_DONOTFLUSH) == 0)
       Flush();

src/d3d11/d3d11_options.cpp

@@ -7,7 +7,6 @@ namespace dxvk {
   const static std::unordered_map<std::string, D3D11OptionSet> g_d3d11AppOptions = {{
     { "Dishonored2.exe", D3D11OptionSet(D3D11Option::AllowMapFlagNoWait)           },
     { "FarCry5.exe",     D3D11OptionSet(D3D11Option::AllowMapFlagNoWait)           },
-    { "Fallout4.exe",    D3D11OptionSet(D3D11Option::DisableGetDataFlagDoNotFlush) },
     { "Overwatch.exe",   D3D11OptionSet(D3D11Option::FakeStreamOutSupport)         },
   }};
   

src/d3d11/d3d11_options.h

@@ -15,15 +15,6 @@ namespace dxvk {
      */
     AllowMapFlagNoWait = 0,
     
-    /**
-     * \brief Ignore D3D11_ASYNC_GETDATA_DONOTFLUSH
-     * 
-     * This can cause significant slowdowns, but some games
-     * expect the implementation to flush the context even
-     * when passing the \c DONOTFLUSH flag.
-     */
-    DisableGetDataFlagDoNotFlush = 1,
-    
     /**
      * \brief Fakes stream output support
      *