Fix test files

Author: allanrenucci

tests/pos/lambda.decompiled

@@ -3,10 +3,7 @@ out/posTestFromTasty/pos/lambda/foo/Foo.class
 --------------------------------------------------------------------------------
 package foo {
   class Foo() {
-    val a: Int => Int =
-      {
-        (x: Int) => x.*(x)
-      }
+    val a: Int => Int = (x: Int) => x.*(x)
   }
 }
 --------------------------------------------------------------------------------

tests/run-with-compiler/i3876-c.check

@@ -6,9 +6,6 @@
       {
         def apply(x: Int): Int
       }
-   = 
-    {
-      (x: Int) => x.+(x)
-    }
+   = (x: Int) => x.+(x)
   (f: (x: Int) => Int).apply(x$1)
 }

tests/run-with-compiler/quote-run-staged-interpreter.check

@@ -1,6 +1,4 @@
-{
-  (x: Int) => 2.+(x).+(4)
-}
+(x: Int) => 2.+(x).+(4)
 6
 8
 9