Remove org-ref

I never really used it as i don’t write actual publications.

configuration.org

@@ -131,7 +131,7 @@ Just to make sure, although most Linux DEs do this for me.
 
 ** Set Org’s main directory
 
-Since a lot of packages use it as their base (org-projectile, org-ref, org-caldav, etc.), i need
+Since a lot of packages use it as their base (org-projectile, org-caldav, etc.), i need
 it as early as possible.
 
 #+BEGIN_SRC emacs-lisp
@@ -3028,31 +3028,6 @@ This is a big one; I use a lot of customisation here.
    ("r" . org-random-todo)))
 #+END_SRC
 
-** Citations and cross-references for Org
-
-#+BEGIN_SRC emacs-lisp
-(use-package org-ref
-  :after
-  org
-  :custom
-  (org-ref-bibliography-notes (expand-file-name "bibliography-notes" org-directory))
-  (org-ref-default-bibliography (expand-file-name "references.bib" org-directory))
-  (org-ref-pdf-directory (expand-file-name "bibtex-pdfs" org-directory)))
-#+END_SRC
-
-And set up a function to open PDF files with the system pdf viewer, using ~xdg-open~.
-
-An alternative could be
-#+BEGIN_EXAMPLE
-(customize-set-variable 'bibtex-completion-pdf-open-function 'org-open-file))
-#+END_EXAMPLE
-
-#+BEGIN_SRC emacs-lisp
-(customize-set-variable 'bibtex-completion-pdf-open-function
-  (lambda (fpath)
-    (start-process "xdg-open" "*open*" "open" fpath)))
-#+END_SRC
-
 ** Load CalDAV entries from NextCloud
 
 #+BEGIN_SRC emacs-lisp

customizations.el

@@ -180,7 +180,6 @@
      org-projectile
      org-projectile-helm
      org-random-todo
-     org-ref
      org-rtm
      org-sticky-header
      origami