ospfd: revert recent PIE change to fix amd64 build

This reverts commit 68575f4babf4d6fc302c366898a1047f13629214.
diff --git a/ospfd/Makefile.am b/ospfd/Makefile.am
index 390f2e3..2e4d5c8 100644
--- a/ospfd/Makefile.am
+++ b/ospfd/Makefile.am
@@ -4,9 +4,6 @@
 DEFS = @DEFS@ $(LOCAL_OPTS) -DSYSCONFDIR=\"$(sysconfdir)/\"
 INSTALL_SDATA=@INSTALL@ -m 600
 
-AM_CFLAGS = $(PICFLAGS)
-AM_LDFLAGS = $(PILDFLAGS)
-
 lib_LTLIBRARIES = libospf.la
 libospf_la_LDFLAGS = -version 0:0:0