Remove NoOperation.

parseCommandLine prints and error and exists if no operation is specified, so
it never returns NoOperation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185691 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-ar/llvm-ar.cpp b/tools/llvm-ar/llvm-ar.cpp
index 80bc21a..50de10b 100644
--- a/tools/llvm-ar/llvm-ar.cpp
+++ b/tools/llvm-ar/llvm-ar.cpp
@@ -83,7 +83,6 @@
 // This enumeration delineates the kinds of operations on an archive
 // that are permitted.
 enum ArchiveOperation {
-  NoOperation,      ///< An operation hasn't been specified
   Print,            ///< Print the contents of the archive
   Delete,           ///< Delete the specified members
   Move,             ///< Move members to end or as given by {a,b,i} modifiers
@@ -205,7 +204,7 @@
   unsigned NumPositional = 0;
 
   // Keep track of which operation was requested
-  ArchiveOperation Operation = NoOperation;
+  ArchiveOperation Operation;
 
   for(unsigned i=0; i<Options.size(); ++i) {
     switch(Options[i]) {
@@ -697,9 +696,6 @@
     case ReplaceOrInsert: haveError = doReplaceOrInsert(&ErrMsg); break;
     case DisplayTable:    haveError = doDisplayTable(&ErrMsg); break;
     case Extract:         haveError = doExtract(&ErrMsg); break;
-    case NoOperation:
-      errs() << argv[0] << ": No operation was selected.\n";
-      break;
   }
   if (haveError) {
     errs() << argv[0] << ": " << ErrMsg << "\n";