Remove unused tag type name (that happens to be reserved) in typedef

Change-Id: I593e7f711c108b273f7a9d0bdcf90c84e97c4d29

extensions/source/macosx/spotlight/main.m

@@ -53,7 +53,7 @@
 //    typedefs
 
 // The layout for an instance of MetaDataImporterPlugIn
-typedef struct __MetadataImporterPluginType
+typedef struct
 {
     MDImporterInterfaceStruct *conduitInterface;
     CFUUIDRef                 factoryID;