examples: Drop unnecessary $(mkinstalldirs) call

$(mkinstalldirs) works like 'mkdir -p' in that it will
create all the necessary parts of the path leading up to
the actual directory, which means creating $(examplesdir)
beforehand is not necessary.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Acked-by: NMichal Privoznik <mprivozn@redhat.com>

examples/Makefile.am

@@ -115,7 +115,6 @@ endif WITH_NWFILTER
 examplesdir = $(docdir)/examples
 
 install-data-local: $(INSTALL_DATA_LOCAL)
-	$(mkinstalldirs) $(DESTDIR)$(examplesdir)
 	for p in $(EXAMPLES); do \
 		d=$$(dirname $$p); \
 		$(mkinstalldirs) $(DESTDIR)$(examplesdir)/$$d; \