Simplify ycmd--request function calls
Simplify ycmd--request function calls

Always use 'json-read as request parser and remove it from keyword
arguments.

abingham/emacs-ycmd,ptrv/emacs-ycmd,emacsmirror/ycmd,emacsmirror/ycmd,ptrv/emacs-ycmd,ptrv/emacs-ycmd,emacsmirror/ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,emacsmirror/ycmd,abingham/emacs-ycmd,abingham/emacs-ycmd,phst/emacs-ycmd,abingham/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd,phst/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd,abingham/emacs-ycmd,phst/emacs-ycmd,ptrv/emacs-ycmd,phst/emacs-ycmd,emacsmirror/ycmd