Redundant axios interceptor code

In the current template there is an axios interceptor in the plugins/axiosCorsInterceptor.ts and in the plugins/deFrameworkInit.ts (there in the DEFramework.init()) as this checks for the window["PROXY_URL"] as well (& registers the very same handler).

As I had to not use the proxy for one service I currently have only locally on my maschine it took me quite a while to figure out why the proxy was still used.