Rename elf2 to elf.

llvm-svn: 262159
diff --git a/lld/ELF/Error.cpp b/lld/ELF/Error.cpp
index 2f78108..75b4604 100644
--- a/lld/ELF/Error.cpp
+++ b/lld/ELF/Error.cpp
@@ -14,7 +14,7 @@
 #include "llvm/Support/raw_ostream.h"
 
 namespace lld {
-namespace elf2 {
+namespace elf {
 
 bool HasError;
 llvm::raw_ostream *ErrorOS;
@@ -60,5 +60,5 @@
     fatal(EC.message());
 }
 
-} // namespace elf2
+} // namespace elf
 } // namespace lld