docs(demos): remove unsupported pagination example
docs(demos): remove unsupported pagination example

I'm not sure how the original example of external pagination worked - it looks to me that
you must always provide a templateUrl to the pagination directive.

Also external pagination doesn't really work - it needs an option to configure the `NgTableParams`
to allow for the standard pager for the table to be switched off.

xwolf12/ng-table,amir-s/ng-table,esvit/ng-table,bnicart/ng-table,joomlavui/ng-table,tpsumeta/ng-table,enkodellc/ng-table,joomlavui/ng-table,SoftwareKing/ng-table,tpsumeta/ng-table,jespinoza711/ng-table,astik/ng-table,aslubsky/ng-table,seawenzhu/ng-table,esvit/ng-table,projectbid7/ng-table,mihnsen/ng-table,Zazulei/ng-table,esvit/ng-table,amir-s/ng-table,bnicart/ng-table,seawenzhu/ng-table,modulexcite/ng-table,Zazulei/ng-table,xwolf12/ng-table,Equalteam/test-220157d9-851d-457e-a789-f2b10c4cf97d-5starsmedia,mihnsen/ng-table,pcmoen/ng-table,enkodellc/ng-table,SoftwareKing/ng-table,jihgao/ng-table,aslubsky/ng-table,christianacca/ng-table,jespinoza711/ng-table,elvis-macak/ng-table,jihgao/ng-table,pcmoen/ng-table,elvis-macak/ng-table,Equalteam/test-220157d9-851d-457e-a789-f2b10c4cf97d-5starsmedia,projectbid7/ng-table,astik/ng-table,jwohlfert23/ng-table-expanded,christianacca/ng-table,kostakoida/ng-table,modulexcite/ng-table,kostakoida/ng-table,jwohlfert23/ng-table-expanded