[wasm] Revert unnecessary dso_local change

Author: kateinoigakukun

include/swift/IRGen/Linking.h

@@ -1627,15 +1627,6 @@ class ApplyIRLinkage {
     // TODO: BFD and gold do not handle COMDATs properly
     if (Triple.isOSBinFormatELF())
       return;
-    // WebAssembly: hack: comdat + custom section = explosion
-    // the comdat code assumes section name would be unique for each comdat
-    // this doesn't happen for metadata.
-    // And avoid to create GOT because wasm32 doesn't support
-    // dynamic linking yet
-    if (Triple.isOSBinFormatWasm()) {
-      GV->setDSOLocal(true);
-      return;
-    }
 
     // COMDATs cannot be applied to declarations.  If we have a definition,
     // apply the COMDAT.