Get rid of non-existent zlib-acknowledgement license

commit_hash:74bca1933b7ea1fad6db359281b163edc04109ec

build/conf/licenses.json

@@ -334,7 +334,6 @@
             "X11-XConsortium-Veillard",
             "YandexOpen",
             "Zlib",
-            "zlib-acknowledgement",
             "ZPL-2.1"
         ]
     },