Doc: Remove update_mathjax target
Doc: Remove update_mathjax target

orhankislal/madlib,apache/incubator-madlib,apache/incubator-madlib,madlib/madlib,njayaram2/incubator-madlib,njayaram2/madlib,madlib/madlib,njayaram2/incubator-madlib,madlib/madlib,hpandeycodeit/incubator-madlib,orhankislal/madlib,njayaram2/incubator-madlib,apache/incubator-madlib,orhankislal/madlib,njayaram2/madlib,madlib/madlib,orhankislal/incubator-madlib,hpandeycodeit/incubator-madlib,madlib/madlib,njayaram2/incubator-madlib,orhankislal/incubator-madlib,orhankislal/madlib,njayaram2/incubator-madlib,hpandeycodeit/incubator-madlib,apache/incubator-madlib,njayaram2/madlib,hpandeycodeit/incubator-madlib,orhankislal/incubator-madlib,orhankislal/incubator-madlib,orhankislal/madlib,njayaram2/madlib,njayaram2/madlib,orhankislal/incubator-madlib,apache/incubator-madlib,hpandeycodeit/incubator-madlib