Got rid of function that I don't need anymore

stateContents.go

@@ -1,7 +1,5 @@
 package main
 
-import "slices"
-
 type stateContents []int // Represents the contents of the current state - character classes can have multiple contents, which is why it is represented as a slice
 
 func newContents(data ...int) stateContents {
@@ -19,8 +17,3 @@ func rune2Contents(data []rune) stateContents { // Convert a rune slice into a s
 	}
 	return toReturn
 }
-
-// Returns true if c contains the given value
-func (c stateContents) contains(val int) bool {
-	return slices.Contains(c, val)
-}