Fix code relating to cookies

internal/styles/tss/build.go

@@ -1,7 +1,6 @@
 package tss
 
 import "os"
-import "io"
 import "fmt"
 import "image"
 import "errors"
@@ -81,7 +80,7 @@ func (this *styleBuilder) build () (*style.Style, event.Cookie, error) {
 
 	// add each texture to the cookies list
 	for _, texture := range this.textures {
-		cookies = append(cookies, closerCookie { Closer: texture })
+		cookies = append(cookies, texture)
 	}
 	
 	return sty, event.MultiCookie(cookies...), nil
@@ -398,10 +397,3 @@ func copyBorderValue[T any, U ~[]T] (destination, source U) bool {
 		return false
 	}
 }
-
-type closerCookie struct {
-	io.Closer
-}
-func (cookie closerCookie) Close () {
-	cookie.Closer.Close()
-}