11.0/trisquel-base-data: fix debian/postinst script

11.0/trisquel-base-data/debian/changelog

+trisquel-base-data (11.8) aramo; urgency=medium
+
+  * Fix debian/postinst script
+
+ -- Trisquel GNU/Linux developers <trisquel-devel@listas.trisquel.info>  Sun, 05 Mar 2023 03:53:21 -0600
+
 trisquel-base-data (11.7) aramo; urgency=medium
 
   * Added /etc/modprobe.d/blacklist-amdgpu.conf

11.0/trisquel-base-data/debian/postinst

 #!/bin/sh
 
-[ -e /etc/modprobe.d/disable-radeon.conf ] && rm /etc/modprobe.d/disable-radeon.conf
-[ -e /etc/grub.d/06_trisquel_theme ] && rm /etc/grub.d/06_trisquel_theme
+rm -f /etc/modprobe.d/disable-radeon.conf
+rm -f /etc/grub.d/06_trisquel_theme
 
+#DEBHELPER#
+exit 0