makefile: Get rid of unneeded include prepends

We no longer need these since enum include handling was fixed in sdbus++
by sdbusplus@8515eae7adcb9811ba271d05d82f66d48b1df082

Change-Id: I8b95157d573216eadb8a0e18e19294182b2be222
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/Makefile.am b/Makefile.am
index 16688dd..0a87d5e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -112,7 +112,6 @@
 xyz/openbmc_project/Network/IP/Create/server.hpp: xyz/openbmc_project/Network/IP/Create.interface.yaml
 	@mkdir -p `dirname $@`
 	$(SDBUSPLUSPLUS) -r $(srcdir) interface server-header xyz.openbmc_project.Network.IP.Create > $@
-	sed -i '5i #include \"xyz\/openbmc_project\/Network\/IP\/server.hpp\"' $@
 
 xyz/openbmc_project/Network/Neighbor/CreateStatic/server.cpp: xyz/openbmc_project/Network/Neighbor/CreateStatic.interface.yaml xyz/openbmc_project/Network/Neighbor/CreateStatic/server.hpp
 	@mkdir -p `dirname $@`
@@ -121,6 +120,5 @@
 xyz/openbmc_project/Network/Neighbor/CreateStatic/server.hpp: xyz/openbmc_project/Network/Neighbor/CreateStatic.interface.yaml
 	@mkdir -p `dirname $@`
 	$(SDBUSPLUSPLUS) -r $(srcdir) interface server-header xyz.openbmc_project.Network.Neighbor.CreateStatic > $@
-	sed -i '5i #include \"xyz\/openbmc_project\/Network\/Neighbor\/server.hpp\"' $@
 
 SUBDIRS = test