Disabled DropNoEffects before the actual change comes to master to see if we can pass all the CI tests.

Author: gsps

compiler/src/dotty/tools/dotc/transform/localopt/Simplify.scala

@@ -49,7 +49,7 @@ class Simplify extends MiniPhase with IdentityDenotTransformer {
     new Devalify                    ::
     new Jumpjump                    ::
     new DropGoodCasts               ::
-    new DropNoEffects(this)         ::
+    // new DropNoEffects(this)         ::
     new InlineLocalObjects(this)    ::
     // new Varify                      :: // varify could stop other transformations from being applied. postponed.
     // new BubbleUpNothing             ::
@@ -62,7 +62,7 @@ class Simplify extends MiniPhase with IdentityDenotTransformer {
     new Devalify                    ::
     new Jumpjump                    ::
     new DropGoodCasts               ::
-    new DropNoEffects(this)         ::
+    // new DropNoEffects(this)         ::
     new ConstantFold(this)          ::
     Nil