Remove extraneous ServerConfig.enhanceLogLevel which is no longer used

src/main/java/com/avaje/ebean/config/ServerConfig.java

@@ -75,11 +75,6 @@ public class ServerConfig {
    */
   private String resourceDirectory;
 
-  /**
-   * The enhance log level. Used with subclass generation.
-   */
-  private int enhanceLogLevel;
-
   /**
    * Set to true to register this EbeanServer with the Ebean singleton.
    */
@@ -560,20 +555,6 @@ public class ServerConfig {
     this.serverCacheManager = serverCacheManager;
   }
 
-  /**
-   * Return the log level used for "subclassing" enhancement.
-   */
-  public int getEnhanceLogLevel() {
-    return enhanceLogLevel;
-  }
-
-  /**
-   * Set the log level used for "subclassing" enhancement.
-   */
-  public void setEnhanceLogLevel(int enhanceLogLevel) {
-    this.enhanceLogLevel = enhanceLogLevel;
-  }
-
   /**
    * Return true if LOB's should default to fetch eager.
    * By default this is set to false and LOB's must be explicitly fetched.