modified debian/rules

-DLIB_SUFFIX is no longer needed, therefore we can drop DEB_HOST_ARCH_OS
and override_dh_auto_configure

debian/rules

@@ -1,16 +1,11 @@
 #!/usr/bin/make -f
 #export DH_VERBOSE=1
 
-DEB_HOST_ARCH_OS ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
-
 export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 
 %:
 	dh ${@} --buildsystem cmake --parallel
 
-override_dh_auto_configure:
-	dh_auto_configure -- -DLIB_SUFFIX="/$(DEB_HOST_MULTIARCH)"
-
 override_dh_auto_install:
 	dh_auto_install -- DESTDIR=$(CURDIR)/debian/lxqt-session