Reduce the number of monkeys on all platforms

examples/Instancing/main.lua

@@ -1,11 +1,7 @@
 -- Surround yourself with monkeys, efficiently
 
 function lovr.load()
-  MONKEYS = 1000
-
-  if lovr.headset.getDriver() ~= "oculusmobile" then -- That's too many monkeys!!!
-    MONKEYS = 700
-  end
+  MONKEYS = 700
 
   -- Create a ShaderBlock to store positions for lots of models
   block = lovr.graphics.newShaderBlock('uniform', {