fix: bugfix to context store remove item methods (#264)

Author: bflorian

lib/util/smart-app-context.js

@@ -337,8 +337,8 @@ module.exports = class SmartAppContext {
 
 	removeItem(key) {
 		if (this.app._contextStore) {
-			if (this.app._contextStore.clearItem) {
-				return this.app._contextStore.clearItem(this.installedAppId, key)
+			if (this.app._contextStore.removeItem) {
+				return this.app._contextStore.removeItem(this.installedAppId, key)
 			}
 			throw new Error('Context store does not support clearing individual item.')
 		}
@@ -347,8 +347,8 @@ module.exports = class SmartAppContext {
 
 	removeAllItems() {
 		if (this.app._contextStore) {
-			if (this.app._contextStore.clearAllItems) {
-				return this.app._contextStore.clearAllItems(this.installedAppId)
+			if (this.app._contextStore.removeAllItems) {
+				return this.app._contextStore.removeAllItems(this.installedAppId)
 			}
 			throw new Error('Context store does not support clearing all items.')
 		}