Cull extraneous whitespace.

One last flurry with the broom before I leave you slobs to code
in your own filth. Eliminated all the trailing whitespace I
could manage, with special prejudice reserved for the test cases
which depended on the preservation of trailing whitespace.

Was reminded I cannot figure out how to eliminate the trailing
space on the "scala> " prompt in repl transcripts. At least
reduced the number of such empty prompts by trimming transcript
code on the way in.

Routed ConsoleReporter's "printMessage" through a trailing
whitespace stripping method which might help futureproof
against the future of whitespace diseases. Deleted the up-to-40
lines of trailing whitespace found in various library files.

It seems like only yesterday we performed whitespace surgery
on the whole repo. Clearly it doesn't stick very well. I suggest
it would work better to enforce a few requirements on the way in.

1 files changed, 2 insertions, 2 deletions

diff --git a/test/files/neg/t3399.scala b/test/files/neg/t3399.scala
index b1fe4e5ee2..3edaa0724f 100644
--- a/test/files/neg/t3399.scala
+++ b/test/files/neg/t3399.scala
@@ -10,7 +10,7 @@ object Nats {
         type FoldR[Init <: Type, Type, F <: Fold[Nat, Type]] =
           F#Apply[Succ[N], N#FoldR[Init, Type, F]]
     }
-    
+
     type Add[A <: Nat, B <: Nat] = A#FoldR[B, Nat, Inc]
     trait Fold[-Elem, Value] {
         type Apply[N <: Elem, Acc <: Value] <: Value
@@ -18,7 +18,7 @@ object Nats {
     type Inc = Fold[Any, Nat] {
         type Apply[N <: Any, Acc <: Nat] = Succ[Acc]
     }
-    
+
     type _1 = Succ[_0]
     implicitly[ Add[_1, _1] =:= _1]
 }
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