Revert "Add workaround for duplicate size changed events on Wayland"

Skipping size changed events can cause EGLRenderer to get stuck in
a state where it can't reset itself properly. This seems to happen
consistently when starting a maximized stream then transitioning
to full-screen.

This reverts commit e1b3f90f8b.

app/streaming/session.cpp

@@ -1395,7 +1395,6 @@ void Session::execInternal()
 
     bool needsFirstEnterCapture = false;
     bool needsPostDecoderCreationCapture = false;
-    bool ignoreDuplicateResizes = false;
 
     // HACK: For Wayland, we wait until we get the first SDL_WINDOWEVENT_ENTER
     // event where it seems to work consistently on GNOME. For other platforms,
@@ -1404,13 +1403,6 @@ void Session::execInternal()
     if (strcmp(SDL_GetCurrentVideoDriver(), "wayland") == 0) {
         // Native Wayland: Capture on SDL_WINDOWEVENT_ENTER
         needsFirstEnterCapture = true;
-
-        // As of SDL 2.0.20, we get duplicate SDL_WINDOWEVENT_SIZE_CHANGED events
-        // when focus is lost and gained under GNOME Wayland. This causes us to
-        // recreate our renderer needlessly. This is fixed in SDL 2.0.21.
-#if !SDL_VERSION_ATLEAST(2, 0, 21)
-        ignoreDuplicateResizes = true;
-#endif
     }
     else {
         // X11/XWayland: Capture after decoder creation
@@ -1448,7 +1440,6 @@ void Session::execInternal()
     // Hijack this thread to be the SDL main thread. We have to do this
     // because we want to suspend all Qt processing until the stream is over.
     SDL_Event event;
-    Sint32 lastResizeW = -1, lastResizeH = -1;
     for (;;) {
 #if SDL_VERSION_ATLEAST(2, 0, 18) && !defined(STEAM_LINK)
         // SDL 2.0.18 has a proper wait event implementation that uses platform
@@ -1572,19 +1563,6 @@ void Session::execInternal()
                 break;
             }
 
-            if (event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
-                if (ignoreDuplicateResizes && lastResizeW == event.window.data1 && lastResizeH == event.window.data2) {
-                    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
-                                "Dropping duplicate size changed event: %d %d",
-                                event.window.data1,
-                                event.window.data2);
-                    break;
-                }
-
-                lastResizeW = event.window.data1;
-                lastResizeH = event.window.data2;
-            }
-
             SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
                         "Recreating renderer for window event: %d (%d %d)",
                         event.window.event,