Removed useless semicolons

These useless semicolons are crashing the documentation generation

Babylon/Tools/babylon.tools.ts

@@ -611,7 +611,7 @@ module BABYLON {
         }
 
         static get AllLogLevel(): number {
-            return Tools._MessageLogLevel | Tools._WarningLogLevel | Tools._ErrorLogLevel;;
+            return Tools._MessageLogLevel | Tools._WarningLogLevel | Tools._ErrorLogLevel;
         }
 
         private static _FormatMessage(message: string): string {
@@ -671,4 +671,4 @@ module BABYLON {
             }
         }
     }
-} 
+}