Remove unnecessary promise chain (#404)

It just returns the return value as it is.

Author: abetomo

lib/main.js

@@ -672,9 +672,7 @@ they may not work as expected in the Lambda environment.
           })
       }
       return Promise.resolve()
-    })).then((data) => {
-      return data
-    })
+    }))
   }
 
   _updateScheduleEvents (scheduleEvents, functionArn, scheduleList) {
@@ -836,9 +834,7 @@ they may not work as expected in the Lambda environment.
               program,
               params.FunctionName
             )
-          ]).then((results) => {
-            return results
-          })
+          ])
         })
       }).catch(() => {
         // Function does not exist
@@ -868,9 +864,7 @@ they may not work as expected in the Lambda environment.
               program,
               params.FunctionName
             )
-          ]).then((results) => {
-            return results
-          })
+          ])
         })
       })
     })