Remove unnecessary free-var-set deletion
authorSimon Peyton Jones <simonpj@microsoft.com>
Tue, 23 Oct 2018 08:10:50 +0000 (09:10 +0100)
committerSimon Peyton Jones <simonpj@microsoft.com>
Wed, 24 Oct 2018 15:38:55 +0000 (16:38 +0100)
commit9aaa8971de7e8438ec0854d198f22385e1687076
tree2d6c3851799c54cc07ad4123d1b5d80be286400c
parentecfe38ef622a73a88caf9857d1752bd2d7541361
Remove unnecessary free-var-set deletion

In TcSimplify.neededEvVars, in add_implic_seeds we were
deleting the 'givens'; but they are already deleted, so
this is a no-op.  This patch just remove the redundant
delete.
compiler/typecheck/TcEvidence.hs
compiler/typecheck/TcSMonad.hs
compiler/typecheck/TcSimplify.hs