[RISCV] Remove using namespace llvm from public header after D121984

1967fd8d · Fangrui Song · 7c7e7770 · 1967fd8d
Commit 1967fd8d authored 3 years ago by Fangrui Song
--- a/llvm/include/llvm/Support/RISCVVIntrinsicUtils.h
+++ b/llvm/include/llvm/Support/RISCVVIntrinsicUtils.h
@@ -15,8 +15,6 @@
 #include <string>
 #include <vector>

-using namespace llvm;
-
 namespace llvm {
 namespace RISCV {