Prune the interesting unclassified programs

[orsenthil]

A number of programs in the list - http://www.uthcode.com/cprogramming/index.html#interesting-uncategorized-programs are repeated and they need to be pruned and cleaned up. The list should include only few programs which are not covered already either in section or in the exercise.

[avinashsonnad]

cleaning C section is finished in my view let's visit it once more together

[orsenthil]

These programs can be removed.

myatoi mystrlen-1 mystrlen mystrncat mystrncmp numsort pngetint remtrailbt reversecomma rightstrindex rudicalci sqrt strendv2 swap synerrors tempconv trim mycp myatoi-2 modentab moddetab lengt80 justcp intostr getlinev2 counts atoiv2 TbsBkSpaces Nofbtn

[orsenthil]

this is done.