diff --git a/index/src/app/utils/logger.ts b/index/src/app/utils/logger.ts
deleted file mode 100644
index 6bb0b86..0000000
--- a/index/src/app/utils/logger.ts
+++ /dev/null
@@ -1,42 +0,0 @@
-import {environment} from '../../environments/environment';
-
-export class Logger {
-
-    private static inited = false;
-
-    static info(obj: object) {
-        this.printLogInfo();
-        if (environment.logger) {
-            // tslint:disable-next-line:no-console
-            console.info(obj);
-        }
-    }
-
-    static debug(obj: object) {
-        this.printLogInfo();
-        if (environment.logger) {
-            // tslint:disable-next-line:no-console
-            console.debug(obj);
-        }
-    }
-
-    static error(obj: object) {
-        this.printLogInfo();
-        if (environment.logger) {
-            // tslint:disable-next-line:no-console
-            console.error(obj);
-        }
-    }
-
-    static printLogInfo() {
-        const option = {
-            environment: environment.production ? 'release' : 'debug',
-        };
-        if (!this.inited) {
-            // tslint:disable-next-line:no-console
-            console.info(option);
-            this.inited = true;
-        }
-    }
-
-}