[clang][driver][wasm] Remove unneeded default labels

Fix build fallout from b5787a0c6cc4da47b7d7b218e23f780076ad2f5f

1 files changed, 0 insertions, 4 deletions

diff --git a/clang/lib/Driver/ToolChains/WebAssembly.cpp b/clang/lib/Driver/ToolChains/WebAssembly.cpp
index 5f64792b4501..4fdfb7e1762e 100644
--- a/clang/lib/Driver/ToolChains/WebAssembly.cpp
+++ b/clang/lib/Driver/ToolChains/WebAssembly.cpp
@@ -435,8 +435,6 @@ void WebAssembly::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
   case ToolChain::CST_Libstdcxx:
     addLibStdCXXIncludePaths(DriverArgs, CC1Args);
     break;
-  default:
-    llvm_unreachable("Unknown stdlib type");
   }
 }
 
@@ -451,8 +449,6 @@ void WebAssembly::AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
   case ToolChain::CST_Libstdcxx:
     CmdArgs.push_back("-lstdc++");
     break;
-  default:
-    llvm_unreachable("invalid stdlib name");
   }
 }