Don't warn when pasting commands containing sudo

[John Doe]

Currently when pasting a command containing "sudo" pantheon-terminal warns
"This command is asking for Administrative access to your computer".

This feature should be removed as it evokes a false sense of security.
Pantheon-terminal can not possibly detect if a command is asking for administrative access.

su'd'o
"su"do
"s"ud'o'
a=sud; ${a}o
su$'\x64'o
su$'\U0064'o
s$'\165'do