Stop using obsolete XVersion

It was useful in 2006 when X.org 6 and X.org 7 had different places for files

keyboard/src/modules/Keyboard.rb

@@ -121,7 +121,6 @@ def main
       Yast.import "OSRelease"
       Yast.import "ProductFeatures"
       Yast.import "Stage"
-      Yast.import "XVersion"
       Yast.import "Report"
 
       # ------------------------------------------------------------------------
@@ -559,7 +558,7 @@ def SetKeyboard(keyboard)
       # do not try to run this with remote X display
       if Ops.greater_than(Builtins.size(@Apply), 0) && x11_setup_needed
         # Apply cannot be escaped as it is already set of parameters. But it is at least our string and not user provided.
-        @xkb_cmd = "#{File.join(XVersion.binPath, "setxkbmap")} #{@Apply}"
+        @xkb_cmd = "/usr/bin/setxkbmap" #{@Apply}"
       else
         @xkb_cmd = ""
       end

keyboard/test/keyboard_test.rb

@@ -13,7 +13,6 @@ module Yast
   import "Path"
   import "Encoding"
   import "AsciiFile"
-  import "XVersion"
   import "Report"
   import "OSRelease"
   import "Keyboard"
@@ -52,7 +51,6 @@ module Yast
     describe "#Save" do
       before(:each) do
         stub_presence_of "/usr/sbin/xkbctrl"
-        allow(XVersion).to receive(:binPath).and_return "/usr/bin"
         # Stub the configuration writing...
         stub_scr_write
         # ...but allow the dump_xkbctrl helper to use SCR.Write
@@ -140,7 +138,6 @@ module Yast
 
       it "calls setxkbmap if graphical system is installed" do
         stub_presence_of "/usr/sbin/xkbctrl"
-        allow(XVersion).to receive(:binPath).and_return "/usr/bin"
 
         expect(SCR).to execute_bash(/loadkeys -C \/dev\/tty.* tr\.map\.gz/)
         # Called twice, for SetConsole and SetX11
@@ -184,7 +181,6 @@ module Yast
 
       before(:each) do
         stub_presence_of "/usr/sbin/xkbctrl"
-        allow(XVersion).to receive(:binPath).and_return "/usr/bin"
 
         allow(SCR).to execute_bash(/xkbctrl/) do |p, cmd|
           dump_xkbctrl(new_lang, cmd.split("> ")[1])