It's still not removing. Sry, I'm noob scripter but Is that lua file correct? 
function replace () 
txd = engineLoadTXD ("vgncarshade1.txd") 
engineImportTXD( txd , 3458) 
  
dff = engineLoadDFF ("vgncarshade1.dff", 0 ) 
engineReplaceModel( dff ,3458) 
  
end 
addEventHandler("onClientResourceStart",getRootElement(), replace) 
  
local state = false 
  
bindKey( 'F3', 'down', 
    function( ) 
        if state then 
            engineRestoreModel (3458) 
            outputChatBox( '#ffcc00[MSG]: #c0c0c0Road texture disabled!', 255,255,255,true ) 
            state = false 
        else 
            txd = engineLoadTXD( 'vgncarshade1.txd', 3458 ) 
            engineImportTXD( txd, 3458 ) 
            state = true 
            outputChatBox( '#ffcc00[MSG]: #c0c0c0Road texture enabled!', 255,255,255,true ) 
        end 
    end 
)   
  
 
I got only this, and the meta.xml