Removed duplicate Opera transition prefix transition. Closes #19. (Thanks @askmike)

Author: adamschwartz

sass/_mixins.sass

@@ -65,7 +65,6 @@
                 -moz-transition: -moz-transform 2s
                 -ms-transition: -ms-transform 2s
                 -o-transition: -o-transform 2s
-                -o-transition: -o-transform 2s
                 transition: transform 2s
 
                 -webkit-transform: translateY(0)

themes/odometer-theme-car.css

@@ -80,7 +80,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-default.css

@@ -79,7 +79,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-digital.css

@@ -80,7 +80,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-minimal.css

@@ -79,7 +79,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-plaza.css

@@ -80,7 +80,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-slot-machine.css

@@ -80,7 +80,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);

themes/odometer-theme-train-station.css

@@ -80,7 +80,6 @@
   -moz-transition: -moz-transform 2s;
   -ms-transition: -ms-transform 2s;
   -o-transition: -o-transform 2s;
-  -o-transition: -o-transform 2s;
   transition: transform 2s;
   -webkit-transform: translateY(0);
   -moz-transform: translateY(0);