Added the simplifyComms pass to the shared pass list for the compiler, and removed the corresponding code in the C backend that the pass replaces

Main.hs

@@ -40,6 +40,7 @@ import ParseRain
 import Pass
 import PreprocessOccam
 import RainPasses
+import SimplifyComms
 import SimplifyExprs
 import SimplifyProcs
 import SimplifyTypes
@@ -51,6 +52,7 @@ commonPasses =
   , ("Simplify expressions", simplifyExprs)
   , ("Simplify processes", simplifyProcs)
   , ("Flatten nested declarations", unnest)
+  , ("Simplify communications", simplifyComms)
   ]
 
 type OptFunc = CompState -> IO CompState

backends/GenerateC.hs

@@ -1001,18 +1001,6 @@ cgenOutputItem ops c (A.OutExpression m e)
                  tell [","]
                  call genBytesIn ops t (Just v)
                  tell [");"]
-            _ ->
-              do n <- makeNonce "output_item"
-                 tell ["const "]
-                 call genType ops t
-                 tell [" ", n, " = "]
-                 call genExpression ops e
-                 tell [";\n"]
-                 tell ["ChanOut ("]
-                 call genVariable ops c
-                 tell [", &", n, ", "]
-                 call genBytesIn ops t Nothing
-                 tell [");\n"]
 --}}}
 
 --{{{  replicators