[master] don't install the *example.hex files

They are used for testing.

Discussed on jabber.

Also see ticket #2479 (but this commit doesn't solve the main
issue reported there).

tests/tools/perfdhcp/templates/Makefile.am

@@ -5,8 +5,6 @@ SUBDIRS = .
 CLEANFILES = test1.hex test2.hex test3.hex test4.hex test5.hex
 
 perfdhcpdir = $(pkgdatadir)
-perfdhcp_DATA = discover-example.hex request4-example.hex
-perfdhcp_DATA += solicit-example.hex request6-example.hex
 
 EXTRA_DIST = discover-example.hex request4-example.hex
 EXTRA_DIST += solicit-example.hex request6-example.hex