remove confluence administrators any issues occur

[indra]

I installed confluence 6.0.5 using admin account,I created some users given administrator permissions now i  removed my admin account there after confluence is working fine or not.

[AnnWorley]

It's ok that you deleted the account you created when you installed Confluence but for some administrative purposes it will be useful to have at least one account which is a member of the the confluence-administrators group. That group "defines a set of "super users" who can access the Administration Console and perform site-wide administration. Members of this group can also see the content of all pages and spaces in the Confluence instance, regardless of space permissions." 

This article has more:

Confluence Admin Permission Levels Explained