Remove unused dependencies from classpath

[Syer10]

I noticed that some weird/oudated dependencies were showing up in my classpath like Ktor CIO and Ktor Android clients. I use OkHttp as my ktor backend. Since Kamel is a library its not supposed to implement things like Ktor Logging and CIO or other ktor client backends and leave that to the user.

I cleaned up any other unneeded depencencies I found in the files.

[alialbaali]

While I agree with you, don't you think there should be some default clients added? So, the user can only add the dependency for the library and can immediately use it, without having to look for other dependencies.

[Syer10]

Nope, libraries that use ktor are meant to only include the dependencies it needs. Adding engines only make Ktor confused.

When using Ktor in a muliplatform way, the default HttpClient constructor(with no engine specified) uses whatever engine is implemented on the current platform, but this is broken when libraries start including thier own engines. You could add this link(https://ktor.io/docs/http-client-engines.html) to the readme to make up for this.

[alialbaali]

Okay, no problem then. Could you update the README by adding a link to the Ktor page containing the engines?

Thanks.

[Syer10]

Done 👍

[alialbaali]

Thanks!