This CSS works like charm. 
Removes Google Logo, terms of use, and Report a problem div.

a[href^="http://maps.google.com/maps"]{display:none !important}
a[href^="https://maps.google.com/maps"]{display:none !important}

.gmnoprint a, .gmnoprint span, .gm-style-cc {
    display:none;
}
.gmnoprint div {
    background:none !important;
}