Inline StringUtils.startsWithIgnoreCase() and use regionMatches() instead of substring()

h2/src/main/org/h2/server/web/WebApp.java

@@ -1420,7 +1420,8 @@ public class WebApp {
     }
 
     private static boolean isBuiltIn(String sql, String builtIn) {
-        return StringUtils.startsWithIgnoreCase(sql, builtIn);
+        int len = builtIn.length();
+        return sql.length() >= len && sql.regionMatches(true, 0, builtIn, 0, len);
     }
 
     private String executeLoop(Connection conn, int count, String sql)

h2/src/main/org/h2/util/StringUtils.java

@@ -110,20 +110,6 @@ public class StringUtils {
         return s.toLowerCase(Locale.ENGLISH);
     }
 
-    /**
-     * Check is a string starts with another string, ignoring the case.
-     *
-     * @param s the string to check (must be longer than start)
-     * @param start the prefix of s
-     * @return true if start is a prefix of s
-     */
-    public static boolean startsWithIgnoreCase(String s, String start) {
-        if (s.length() < start.length()) {
-            return false;
-        }
-        return s.substring(0, start.length()).equalsIgnoreCase(start);
-    }
-
     /**
      * Convert a string to a SQL literal. Null is converted to NULL. The text is
      * enclosed in single quotes. If there are any special characters, the