There is no scope that I can remove my TLD from the subdomains. Because it's not in the main list. It's present only in drop-down list there.
I tried your 2nd advice. Changed main domain from monbangla.x10hosting.com to monbangla.exofire.net. But situation prevails. No way. If I try to park my domain again it shows this message -
	
	
		
		
			There was a problem creating the parked domain. 
Error from park wrapper: monbangla.com is already configured.
		
		
	 
Also, after changing main domain, now there is a message in cPanel under "Dedicated Ip Address" -
	
	
		
		
			[a fatal error or
timeout occurred
while processing
this directive][
a fatal error or 
timeout occurred 
while processing 
this directive][a
fatal error or t
imeout occurred w
hile processing t
his directive][a 
fatal error or ti
meout occurred wh
ile processing th
is directive][a f
atal error or tim
eout occurred whi
le processing thi
s directive]
		
		
	 
For your info, my user name: monpagol
Please help me out ASAP.
Edit:
No reply yet! Please arrange to resolve my case.