[RISCV] Remove extraneous semicolons. NFC

Author: lukel97

llvm/include/llvm/Support/RISCVISAInfo.h

@@ -71,10 +71,10 @@ class RISCVISAInfo {
   std::vector<std::string> toFeatures(bool AddAllExtensions = false,
                                       bool IgnoreUnknown = true) const;
 
-  const OrderedExtensionMap &getExtensions() const { return Exts; };
+  const OrderedExtensionMap &getExtensions() const { return Exts; }
 
-  unsigned getXLen() const { return XLen; };
-  unsigned getFLen() const { return FLen; };
+  unsigned getXLen() const { return XLen; }
+  unsigned getFLen() const { return FLen; }
   unsigned getMinVLen() const { return MinVLen; }
   unsigned getMaxVLen() const { return 65536; }
   unsigned getMaxELen() const { return MaxELen; }