Revert "fix section size from numberOfSectionsInTableView"

This reverts commit 6bd97fb3439f9f18c8123acf00f61e6b5a52cdd8.
Merge pull request #236 from toshiwo/revert_counting_of_section_in_numberOfSectionsInTableView

Revert "fix section size from numberOfSectionsInTableView"