[clang-tools-extra] [clangd] Apply modernize-use-string-view to the code (PR #180335)

[Zinovy Nis via cfe-commits]

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@@ -30,7 +30,7 @@ std::string platformString() {
   return PlatformString;
 }
 
-std::string featureString() {
+llvm::StringRef featureString() {
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irishrover wrote:

If so, the whole PR seems to be useless.

https://github.com/llvm/llvm-project/pull/180335