Stop using packages.el (#942)

Fixes #757

Author: r-darwish

src/steps/emacs.el

@@ -1,16 +1,9 @@
-(if (fboundp 'paradox-upgrade-packages)
-    (progn
-      (unless (boundp 'paradox-github-token)
-        (setq paradox-github-token t))
-      (paradox-upgrade-packages)
-      (princ
-       (if (get-buffer "*Paradox Report*")
-           (with-current-buffer "*Paradox Report*" (buffer-string))
-         "\nNothing to upgrade\n")))
-  (progn
-    (let ((package-menu-async nil))
-      (package-list-packages))
-    (package-menu-mark-upgrades)
-    (condition-case nil
-        (package-menu-execute 'noquery)
-      (user-error nil))))
+(when (fboundp 'paradox-upgrade-packages)
+    (progn
+      (unless (boundp 'paradox-github-token)
+        (setq paradox-github-token t))
+      (paradox-upgrade-packages)
+      (princ
+       (if (get-buffer "*Paradox Report*")
+           (with-current-buffer "*Paradox Report*" (buffer-string))
+         "\nNothing to upgrade\n"))))