Comment out temporarily-unused predicates

ql/src/codeql_ruby/regexp/RegExpTreeView.qll

@@ -351,43 +351,42 @@ class RegExpEscape extends RegExpNormalChar {
     //)
   }
 
-  /**
-   * Gets int value for the `index`th char in the hex number of the unicode escape.
-   * E.g. for `\u0061` and `index = 2` this returns 96 (the number `6` interpreted as hex).
-   */
-  private int getHexValueFromUnicode(int index) {
-    isUnicode() and
-    exists(string hex, string char | hex = getText().suffix(2) |
-      char = hex.charAt(index) and
-      result = 16.pow(hex.length() - index - 1) * toHex(char)
-    )
-  }
-
+  // TODO: uncomment when toUnicode() is available
+  ///**
+  // * Gets int value for the `index`th char in the hex number of the unicode escape.
+  // * E.g. for `\u0061` and `index = 2` this returns 96 (the number `6` interpreted as hex).
+  // */
+  //private int getHexValueFromUnicode(int index) {
+  //  isUnicode() and
+  //  exists(string hex, string char | hex = getText().suffix(2) |
+  //    char = hex.charAt(index) and
+  //    result = 16.pow(hex.length() - index - 1) * toHex(char)
+  //  )
+  //}
   string getUnescaped() { result = this.getText().suffix(1) }
 
   override string getAPrimaryQlClass() { result = "RegExpEscape" }
 }
 
-/**
- * Gets the hex number for the `hex` char.
- */
-private int toHex(string hex) {
-  hex = [0 .. 9].toString() and
-  result = hex.toInt()
-  or
-  result = 10 and hex = ["a", "A"]
-  or
-  result = 11 and hex = ["b", "B"]
-  or
-  result = 12 and hex = ["c", "C"]
-  or
-  result = 13 and hex = ["d", "D"]
-  or
-  result = 14 and hex = ["e", "E"]
-  or
-  result = 15 and hex = ["f", "F"]
-}
-
+///**
+// * Gets the hex number for the `hex` char.
+// */
+//private int toHex(string hex) {
+//  hex = [0 .. 9].toString() and
+//  result = hex.toInt()
+//  or
+//  result = 10 and hex = ["a", "A"]
+//  or
+//  result = 11 and hex = ["b", "B"]
+//  or
+//  result = 12 and hex = ["c", "C"]
+//  or
+//  result = 13 and hex = ["d", "D"]
+//  or
+//  result = 14 and hex = ["e", "E"]
+//  or
+//  result = 15 and hex = ["f", "F"]
+//}
 /**
  * A character class escape in a regular expression.
  * That is, an escaped character that denotes multiple characters.