Drop unnecessary parenthesis in types, put in by the user

 
We were putting in parenthesis were the user did. Let's remove this since
it just clutters up the types. The types are readable anyway since we print
parens around infix operators and do not rely on fixity levels.
  
When doing this I discovered that we were relying on user parenthesis when
printin types like (a `O` b) c. This patchs fixes this problem so that
parenthesis are always inserted around an infix op application in case it
is applied to further arguments, or if it's an arguments to a type constructor.

Tests are updated.

0 files changed, 0 insertions, 0 deletions