Revert "Handle conffiles for DEB packages explicitly instead of automatically." (#14700)

Revert "Handle conffiles for DEB packages explicitly instead of automatically. (#14662)"

This reverts commit 95ccc9cd47510988c77c97b93308548efbc7d939.

contrib/debian/netdata.conffiles

@@ -1,4 +0,0 @@
-/etc/default/netdata
-/etc/init.d/netdata
-/etc/logrotate.d/netdata
-/etc/netdata/netdata.conf

contrib/debian/rules

@@ -127,25 +127,6 @@ override_dh_installlogrotate:
 	cp system/logrotate/netdata debian/netdata.logrotate
 	dh_installlogrotate
 
-override_dh_installdeb:
-	dh_installdeb
-	@echo "Recreating conffiles without auto-adding /etc files"
-	@for dir in ${CURDIR}/debian/*/DEBIAN; do \
-	    PKG=$$(basename $$(dirname $$dir)); \
-	    FILES=""; \
-	    if [ -f ${CURDIR}/debian/conffiles ]; then \
-	        FILES="${CURDIR}/debian/conffiles"; \
-	    fi; \
-	    if [ -f ${CURDIR}/debian/$${PKG}.conffiles ]; then \
-	        FILES="$$FILES ${CURDIR}/debian/$${PKG}.conffiles"; \
-	    fi; \
-	    if [ -n "$$FILES" ]; then \
-	        cat $$FILES | sort -u > $$dir/conffiles; \
-	    elif [ -f $$dir/conffiles ]; then \
-	        rm $$dir/conffiles; \
-	    fi; \
-	done
-
 override_dh_clean:
 	dh_clean