Removed mention of phing from license file (CC-3237)

LICENSE_3RD_PARTY

@@ -40,12 +40,6 @@ Linked code:
    - License: MIT/Expat License
    - Compatible with the GPL: Yes.  See http://www.gnu.org/licenses/license-list.html
 
- * Phing 
-   - What is it: PHP project build system
-   - Web site: http://phing.info/trac/
-   - Note: Only used for database installation and development, not needed to run Airtime.
-   - License: LGPLv3
-
  * PHP-AMQPLIB
    - What is it: PHP library to interact with RabbitMQ
    - Web site: https://github.com/tnc/php-amqplib 
@@ -175,7 +169,7 @@ Non-linked code:
    - Web site: http://www.python.org/
    - License: PSF License. See http://docs.python.org/license.html
 
- * Liquidsoap (pre-release of 1.0) 
+ * Liquidsoap 1.0.0 
    - Web site: http://savonet.sourceforge.net/
    - License: GPLv2