I just switched from POP to IMAP in Tbird with earthlink as my ISP. It seems to be working well now but that leaves a question

when I go into tools, accounts I see my IMAP account with the outgoing server list. But under that account I see Local Folders with the smtp settings nested under that. In Tbird I see the all the folders listed under my IMAP account name but also see Local Folders with all of its folders listed under it. Back in account settings I click on Local Folders and then click on account actions but 'remove account' is grayed out. when I go into %APPDATA% and Thunderbird I see a default folder with a weird name: snjybqrk.default with todays date and then 4 other accounts listed below it with the same snjybqrk but with -AsOf[08-11-15@1413 in each of those profiles there is a ImapMail folder and a Mail folder. Under Mail folder there is a Local Folders folder, a pop folder and a smart maiboxes folder. Question is should I just delete the Mail folder and be done with it leaving just the ImapMail folder?