Fix: Remove error icon for checksum comparison

This makes it visually better on phones, and also happens to work
around
material-components/material-components-android#4146
now that we don't have an end/error icon that's disappearing.

app/src/main/res/layout/file_properties_checksum_compare_item.xml

@@ -13,6 +13,7 @@
     android:layout_height="wrap_content"
     android:hint="@string/file_properties_checksum_compare"
     app:errorEnabled="true"
+    app:errorIconDrawable="@null"
     app:expandedHintEnabled="false"
     app:placeholderText="@string/file_properties_checksum_compare_placeholder">