Various cleanup

Removes version compatibility checks for TBC/Vanilla, consolidating code to target a single WoW version. Refactors repetitive SetWidth/SetHeight calls to SetSize for cleaner code. Removes duplicate function definitions from unitxp module and simplifies conditional show/hide operations using SetShown.

modules/unitxp.lua

@@ -331,26 +331,6 @@ pfUI:RegisterModule("unitxp", function ()
     return success and found
   end
 
-  pfUI.api.UnitInLineOfSight = function(unit1, unit2)
-    if not unit2 then
-      unit2 = unit1
-      unit1 = "player"
-    end
-    local success, inSight = pcall(UnitXP, "inSight", unit1, unit2)
-    if success then return inSight end
-    return nil
-  end
-
-  pfUI.api.UnitIsBehind = function(unit1, unit2)
-    if not unit2 then
-      unit2 = unit1
-      unit1 = "player"
-    end
-    local success, behind = pcall(UnitXP, "behind", unit1, unit2)
-    if success then return behind end
-    return nil
-  end
-
   -- Debug command to test UnitXP indicators
   pfUI.api.RegisterSlashCommand("PFUNITXP", { "/pfunitxp" }, function()
     local chat = DEFAULT_CHAT_FRAME

modules/whisperproxy.lua

@@ -3,8 +3,7 @@ pfUI:RegisterModule("whisperproxy", function ()
 
   local proxy = CreateFrame("Button", "pfWhisperProxy", pfUI.chat.left.panelTop)
   proxy:SetPoint("TOPRIGHT", pfUI.chat.left, "TOPRIGHT", -22, -5)
-  proxy:SetWidth(12)
-  proxy:SetHeight(12)
+  proxy:SetSize(12, 12)
   proxy.tex = proxy:CreateTexture(nil, "OVERLAY")
   proxy.tex:SetAllPoints()
   proxy.tex:SetTexture(pfUI.media["img:proxy"])

modules/xpbar.lua

@@ -183,11 +183,7 @@ end
     local self = self or this
 
     if self.text_mouse == "1" then
-      if MouseIsOver(self) then
-        self.bar.text:Show()
-      else
-        self.bar.text:Hide()
-      end
+      self.bar.text:SetShown(MouseIsOver(self))
     end
 
     if self.always then return end
@@ -352,11 +348,7 @@ end
     b.bar.text:SetJustifyH("CENTER")
     b.bar.text:SetFont(pfUI.font_default, C.global.font_size, "OUTLINE")
 
-    if b.text == "1" then
-      b.bar.text:Show()
-    else
-      b.bar.text:Hide()
-    end
+    b.bar.text:SetShown(b.text == "1")
 
     b.restedbar = b.restedbar or CreateFrame("StatusBar", nil, b)
     b.restedbar:SetStatusBarTexture(pfUI.media[C.panel.xp.texture])