Drop dh_install --fail-missing, it's the default since debhelper 13

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

debian/rules

@@ -16,8 +16,7 @@ override_dh_auto_configure:
 override_dh_install:
 	# .la files are specifically unwanted
 	rm -f debian/tmp/usr/lib/*/*.la
-	# break the build if anything else is missed
-	dh_install --fail-missing
+	dh_install
 
 override_dh_strip:
 	dh_strip --dbgsym-migration='prestwood-dbg (<< 0.1703.0-0co1~)'