Replace paginated with iterator

[kunalsz]

In reference to the issue #1798

• Replaced the custom paginated by using the inbuilt .iterator() method
• Also removed the paginated method from the BaseQuerySet

@keshav-space Looking forward to your insights

[pombredanne]

@kunalsz Thanks! Did you make any quick measurement before and after to validate that this is more efficient in ram/cpu/number of queries? Would there be a small unit test that could check this?

[kunalsz]

Hi @pombredanne , I don't know how to test this out like @keshav-space did in the respective issue, if he could share the code/test file which he used to compare both the functions then I'll happily add the test results too.