Remove the now-superseded 9.0 tags (which already likely contain 9.0.1)

library/php-zendserver

@@ -10,9 +10,6 @@
 5.4: git://github.com/zendtech/php-zendserver-docker@b9f59920986c0471fee9c0cb7e83f0f894413454 7.0/5.4
 7.0-php5.4: git://github.com/zendtech/php-zendserver-docker@b9f59920986c0471fee9c0cb7e83f0f894413454 7.0/5.4
 
-9.0: git://github.com/zendtech/php-zendserver-docker@b9f59920986c0471fee9c0cb7e83f0f894413454 9.0/7.0
-9.0-php7: git://github.com/zendtech/php-zendserver-docker@b9f59920986c0471fee9c0cb7e83f0f894413454 9.0/7.0
-
 9.0.1: git://github.com/zendtech/php-zendserver-docker@851cbb2346939e98bb0a8a15cd9973fd950fd66b 9.0.1/7.0
 9.0.1-php7: git://github.com/zendtech/php-zendserver-docker@851cbb2346939e98bb0a8a15cd9973fd950fd66b 9.0.1/7.0