Merge pull request #1240 from Unity-Technologies/tizen-warning-fix

Tizen not supported on 18.2+

ScriptableRenderPipeline/Core/CoreRP/Textures/TextureCache.cs

                 {
                     case BuildTarget.iOS:
                     case BuildTarget.Android:
+    #if !UNITY_2018_2_OR_NEWER
+    #endif
                     case BuildTarget.WSAPlayer:
                         // Note: We return true on purpose even if Windows Store Apps are running on Desktop.
                         return true;