fixup! [FIRRTL] Add FormatStringType, TimeOp Expression

Author: seldridge

lib/Dialect/FIRRTL/FIRRTLOps.cpp

@@ -6308,10 +6308,6 @@ LayerBlockOp::verifySymbolUses(SymbolTableCollection &symbolTable) {
 // Format Sring operations
 //===----------------------------------------------------------------------===//
 
-// FIRRTLType TimeOp::inferReturnType(mlir::MLIRContext *context) {
-//   return FormatStringType::get(context);
-// }
-
 void TimeOp::getAsmResultNames(OpAsmSetValueNameFn setNameFn) {
   setNameFn(getResult(), "time");
 }