[refactor,util][xs]: remove remaining code in util.js as not used anywhere (position and $.fn.serializeObject).
[refactor,util][xs]: remove remaining code in util.js as not used anywhere (position and $.fn.serializeObject).

maxogden/recline,beni55/recline,GerHobbelt/recline,modulexcite/recline,boban-dj/recline,gotjoshua/recline,maxogden/recline,beni55/recline,huangciyin/reclinejs-requirejs,gotjoshua/recline,okfn/recline,rjsteinert/recline,modulexcite/recline,NuCivic/recline.js,acouch/recline,NuCivic/recline.js,acouch/recline,gotjoshua/recline,huangciyin/reclinejs-requirejs,GerHobbelt/recline,NuCivic/recline.js,boban-dj/recline,rjsteinert/recline,boban-dj/recline,beni55/recline,rjsteinert/recline,okfn/recline,acouch/recline,okfn/recline,GerHobbelt/recline,modulexcite/recline