configure/automake: Remove work-arounds

Change-Id: I97a085248e6cbcd15daf96c0c23f31cdcd02e06b
diff --git a/Makefile.am b/Makefile.am
index 0ff9363..9789ba3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -7,6 +7,11 @@
 
 EXTRA_DIST = asn1 .version README.md contrib/remsim-apitool.py
 
+AM_DISTCHECK_CONFIGURE_FLAGS = \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir) \
+	--with-usbdropdir=$$dc_install_base/$(usbdropdir) \
+	--with-serialconfdir=$$dc_install_base/$(serialconfdir)
+
 pkgcofigdir = $(libdir)/pkgconfig
 
 @RELMAKE@