chore: rm unused extension

Author: swagfin

ObjectSemantics.NET/Engine/Extensions/StringExtensions.cs

@@ -25,53 +25,6 @@ public static string RemoveLastInstanceOfString(this string value, params char[]
             return value;
         }
 
-        public static string TrimCustom(this string data, char[] chars, int? takeCount)
-        {
-            if (string.IsNullOrEmpty(data) || chars == null || chars.Length == 0)
-                return data;
-
-            // If takeCount is null or < 1, behave like normal Trim
-            if (takeCount == null || takeCount < 1)
-                return data.Trim(chars);
-
-            int leftIndex = 0;
-            int rightIndex = data.Length - 1;
-            int leftCount = 0;
-            int rightCount = 0;
-
-            // ⚡ Use simple lookup optimization
-            // Create a small fixed lookup array for faster char matching
-            bool[] lookup = new bool[char.MaxValue + 1];
-            for (int i = 0; i < chars.Length; i++)
-                lookup[chars[i]] = true;
-
-            // Trim from start
-            while (leftIndex < data.Length && leftCount < takeCount.Value)
-            {
-                char c = data[leftIndex];
-                if (c < lookup.Length && lookup[c])
-                {
-                    leftIndex++;
-                    leftCount++;
-                }
-                else break;
-            }
-
-            // Trim from end
-            while (rightIndex >= leftIndex && rightCount < takeCount.Value)
-            {
-                char c = data[rightIndex];
-                if (c < lookup.Length && lookup[c])
-                {
-                    rightIndex--;
-                    rightCount++;
-                }
-                else break;
-            }
-
-            return data.Substring(leftIndex, rightIndex - leftIndex + 1);
-        }
-
         public static string ToMD5String(this string input)
         {
             try