removed mentioned maven repo from java client docs
removed mentioned maven repo from java client docs

gmrodrigues/crate,sunny256/crate,puneetjaiswal/crate,husky-koglhof/crate,crate/crate,puneetjaiswal/crate,puneetjaiswal/crate,gmrodrigues/crate,adrpar/crate,crate/crate,EvilMcJerkface/crate,aslanbekirov/crate,husky-koglhof/crate,EvilMcJerkface/crate,adrpar/crate,aslanbekirov/crate,gmrodrigues/crate,sunny256/crate,husky-koglhof/crate,crate/crate,aslanbekirov/crate,sunny256/crate,EvilMcJerkface/crate,adrpar/crate