Remove nonexistent Logger methods from types

Author: JavaScriptBach

index.d.ts

@@ -139,13 +139,6 @@ declare namespace winston {
     input: LeveledLogMethod;
     silly: LeveledLogMethod;
 
-    // for syslog levels only
-    emerg: LeveledLogMethod;
-    alert: LeveledLogMethod;
-    crit: LeveledLogMethod;
-    warning: LeveledLogMethod;
-    notice: LeveledLogMethod;
-
     query(
       options?: QueryOptions,
       callback?: (err: Error, results: any) => void