Remove support for oUF 1.5.x

diff --git a/tags.lua b/tags.lua
index 19a5602..441016f 100644
--- a/tags.lua
+++ b/tags.lua
@@ -9,14 +9,7 @@ local function ShortValue(value)
 	end
 end

-local tags
-if(oUF.version == '1.6.0') then
-	tags = oUF.Tags
-else
-	tags = {}
-	tags.Methods = oUF.Tags
-	tags.Events = oUF.TagEvents
-end
+local tags = oUF.Tags

 tags.Methods['p3lim:status'] = function(unit)
 	if(not UnitIsConnected(unit)) then