mediawiki.mixins: Remove `-o-transition`

Removing `-o-transition` as basic support is still prolonged without
it and it saves some bytes on 99.95%+ clients (no clear usage numbers on
Opera 9.70–11.50 users).

Bug: T127023
Change-Id: Ie2e5b2d851aeaa14f802c3a300b79cd1517e10f8

diff --git a/resources/src/mediawiki.less/mediawiki.mixins.less b/resources/src/mediawiki.less/mediawiki.mixins.less
index f6c407a..a550cbe 100644 (file)
--- a/resources/src/mediawiki.less/mediawiki.mixins.less
+++ b/resources/src/mediawiki.less/mediawiki.mixins.less
@@ -55,7 +55,6 @@
 .transition(@value) {
        -webkit-transition: @value; // Safari 3.1-6.0, iOS 3.2-6.1, Android 2.1-4.3
        -moz-transition: @value; // Firefox 4-15
-       -o-transition: @value; // Opera 10.5-12.0
        transition: @value; // Chrome 26+, Firefox 16+, IE 10+, Safari 6.1+, Opera 12.1+, iOS 7+, Android 4.4+
 }