clean(e2e): remove unnecessary files in specs

Refs #648

wdio.conf.ts

@@ -33,7 +33,7 @@ export const config: Options.Testrunner = {
     // will be called from there.
     //
     specs: [
-        './e2e/**/*.ts'
+        './e2e/**/*e2e-spec.ts'
     ],
     // Patterns to exclude.
     exclude: [