Remove jQuery from the bower and component files

Users are expected to be using jQuery in their web applications
already, it's up to them to determine how it is loaded in.

This closes https://github.com/select2/select2/issues/2941.

bower.json

@@ -8,8 +8,5 @@
     "repository": {
         "type": "git",
         "url": "git@github.com:select2/select2.git"
-    },
-    "dependencies": {
-        "jquery": ">= 1.7.1"
     }
 }

composer.json

@@ -5,8 +5,7 @@
   "homepage": "https://select2.github.io/",
   "license": "MIT",
   "require": {
-    "robloach/component-installer": "*",
-    "components/jquery": ">=1.7.2"
+    "robloach/component-installer": "*"
   },
   "extra": {
     "component": {