There is a way to remove the arrow of mat-select?
just add
.mat-select-arrow {
border: none;
}
to the component style's sheet or the styles.scss of your angular app.
Caution this will remove every arrow in mat-select.
if you want to remove arrow for a few ones just add a class to mat-form-field
and nest your class in the scss file.
You can find an example here stackblitz