look for .panel-button #appMenuIcon in you're gnome-shell.css in you're themes folder be sure to stop at the last " } " after the .app-menu-icon.
.panel-button #appMenuIcon {
width: 0px;
height: 0px;
}
.panel-button #appMenuIcon {
app-icon-bottom-clip: 0px;
}
.panel-button:active #appMenuIcon,
.panel-button:checked #appMenuIcon,
.panel-button:focus #appMenuIcon {
app-icon-bottom-clip: 0px;
}
.app-menu-icon {
/* width: 24px;
height: 24px; */
}
you can try this too but it will remove the text
https://extensions.gnome.org/extensio...
icons theme
https://extensions.gnome.org/extensio...
shell theme
http://tiheum.deviantart.com/art/Gnom...