[llvm] [RISCV] Remove unused function declaration. NFC (PR #168459)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/168459.diff


1 Files Affected:

- (modified) llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp (-1) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
index 10588b9739188..cf5c681fd1966 100644
--- a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
+++ b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
@@ -222,7 +222,6 @@ class RISCVAsmParser : public MCTargetAsmParser {
 
   ParseStatus parseRegReg(OperandVector &Operands);
   ParseStatus parseXSfmmVType(OperandVector &Operands);
-  ParseStatus parseRetval(OperandVector &Operands);
   ParseStatus parseZcmpStackAdj(OperandVector &Operands,
                                 bool ExpectNegative = false);
   ParseStatus parseZcmpNegStackAdj(OperandVector &Operands) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/168459