Fix rendering with OF F1_pre13 (via OptiFabric) installed

Note that to run it in dev env, one must switch back fabric-api to 0.2.

src/main/java/com/replaymod/compat/shaders/mixin/MixinShaderRenderChunk.java

@@ -21,8 +21,6 @@ public abstract class MixinShaderRenderChunk {
      */
     @Inject(method = "isPlayerUpdate", at = @At("HEAD"), cancellable = true, remap = false)
     private void replayModCompat_disableIsPlayerUpdate(CallbackInfoReturnable<Boolean> ci) {
-        // TODO: Update to 1.12 once optifine is available
-        // TODO: We're on 1.13 now and haven't gotten any 1.12 complaints, so 1.12 is probably working but 1.13?
         if (((EntityRendererHandler.IEntityRenderer) mc.gameRenderer).replayModRender_getHandler() == null) return;
         ci.setReturnValue(true);
     }