That tar is protecting your basement and foundation from leakage which
will not only leak into the basement, but could cause severe damage to
the foundation. Do not remove it.
Women hate everything that protects them. This includes tar on their
foundation walls, and the men who protect them, including their
husbands. The recommended procedure is to get rid of the wife, and thus
save the house foundation.
Although, there is the slight possibility that your wife could sew a
quilt to cover that wall, or make a macrame thingie out of yarn for it.
Just let her create some sort of useless woman thingie for it. Who
knows, she might wallpaper it, or even hire all the city gangbangers to
spray paint grafitti on it. Or she might cover it with peel and stick
floor tiles (women love those things).
As the *MAN* in the house, your job is to protect the house, even if
that means getting rid of the wife. It's a tough decision, but it must
be done. But before you dump the wife, why not let her cover it with
some really ugly women craft crap. Who knows, maybe both you and the
wife can continue to live there, just as long as you ignore a really
ugly wall.
PS. If you're pussy whipped, and insist on kissing her ass, and harming
the house, by removing the tar, use your wife's hair dryer to soften the
tar, then use her tongue to lick it off.