fix(core): remove semantic-release from the dependencies

Fixes #1171

.travis.yml

@@ -15,7 +15,7 @@ after_success:
   - cp .git dist/@ngx-translate/core/ -r # required by semantic release
   - cp README.md dist/@ngx-translate/core/
   - cd dist/@ngx-translate/core/
-  - npm install [email protected] -D
+  - npm install [email protected] --no-save
   - npm run semantic-release
 branches:
   except:

projects/ngx-translate/core/package.json

@@ -22,9 +22,6 @@
     "@angular/core": ">=8.0.0",
     "rxjs": ">=6.3.0"
   },
-  "devDependencies": {
-    "semantic-release": "8.2.3"
-  },
   "scripts": {
     "semantic-release": "semantic-release pre && npm publish && semantic-release post"
   }