chore(types): remove unnecessary type assertions (#4336)

packages/runtime-core/src/component.ts

@@ -475,7 +475,7 @@ export function createComponentInstance(
     emitsOptions: normalizeEmitsOptions(type, appContext),
 
     // emit
-    emit: null as any, // to be set immediately
+    emit: null!, // to be set immediately
     emitted: null,
 
     // props default value

packages/runtime-core/src/componentOptions.ts

@@ -651,7 +651,7 @@ export function applyOptions(instance: ComponentInternalInstance) {
           `Plain object usage is no longer supported.`
       )
     }
-    const data = (dataOptions as any).call(publicThis, publicThis)
+    const data = dataOptions.call(publicThis, publicThis)
     if (__DEV__ && isPromise(data)) {
       warn(
         `data() returned a Promise - note data() cannot be async; If you ` +