remove data source created on report server

hello,

i created two datasource on the report server they were created succssfully , I messed up while working on the security of the second datasource and endedup deleting both builtin administrator & myself 

Now i am unable to view home folder of the report as it showing empty where as in reality it show one folder and atleast one data source as i did mess with security of the first data source  

currently my view

where as i am able to access the folder which i have created at home and also the first datasource as shown in screens below

and when it try to access the second datasource  i given error mentioned in below screenshot

http://XXXXXXXXX/reports/manage/catalogitem/security/conventional?_pk=s1crz700

is the link access the security setting of 1st datasource tried to the same for the second but was met with an error

http://XXXXXXXXX/reports/manage/catalogitem/security/takaful?_pk=s1crz700

i can view both sources in my report builder aswell meaning both of them are on the server.

is there a way that i can reset the the security settings or delete the second datasource ?

Thanks