Merge a switch case into the identical case block below. NFC.

swiftix · swiftix · commit 378442185f3f · 2015-12-01T21:27:50.000-08:00
diff --git a/lib/IRGen/IRGenSIL.cpp b/lib/IRGen/IRGenSIL.cpp
@@ -2104,8 +2104,6 @@ getPartialApplicationFunction(IRGenSILFunction &IGF,
       break;
         
     case SILFunctionTypeRepresentation::WitnessMethod:
-      break;
-      
     case SILFunctionTypeRepresentation::Thick:
     case SILFunctionTypeRepresentation::Thin:
     case SILFunctionTypeRepresentation::Method:
