remove unused util functions

src/util.ts

@@ -381,41 +381,6 @@ class Util {
     public escapeRegex(text: string) {
         return text?.toString().replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
     }
-
-    /**
-     * Returns a function that generates a string of off+on chars for showing "animated" loading in text-based locations
-     * @param max the total number of chars to show
-     * @param offChar the char to show when that index is "off"
-     * @param onChar the char to show when that index is "on"
-     * @returns function that generates loading strings
-     */
-    public createTextSpinner(max: number, offChar = '◦', onChar = '•') {
-        let current = 2;
-        const fullText = offChar.repeat(max).split('');
-        /**
-         * Generate the next text
-         * @param increment if false, will return the same value as last time
-         */
-        return function spinner(increment = true) {
-            const text = [...fullText];
-            if (increment) {
-                current++;
-            }
-            text[current % max] = onChar;
-            return text.reverse().join('');
-        };
-    }
-
-    /**
-     * Set an interval
-     * @returns a function that can be called to clear the interval
-     */
-    public setInterval(callback: () => any, duration: number) {
-        const handle = setInterval(callback, duration);
-        return () => {
-            clearInterval(handle);
-        };
-    }
 }
 
 const util = new Util();