SecondaryDisplay.kt: Remove redundant SurfaceTexture, preventing log spam

src/android/app/src/main/java/org/citra/citra_emu/display/SecondaryDisplay.kt

@@ -23,15 +23,12 @@ class SecondaryDisplay(val context: Context) {
     private val vd: VirtualDisplay
 
     init {
-        val st = SurfaceTexture(0)
-        st.setDefaultBufferSize(1920, 1080)
-        val vdSurface = Surface(st)
         vd = displayManager.createVirtualDisplay(
             "HiddenDisplay",
             1920,
             1080,
             320,
-            vdSurface,
+            null,
             DisplayManager.VIRTUAL_DISPLAY_FLAG_PRESENTATION
         )
     }