patch-lib_Makefile.in

- workaround for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262709

--- lib/Makefile.in.orig	2022-03-22 00:02:00 UTC
+++ lib/Makefile.in
@@ -180,7 +180,7 @@ sysconfdir = @sysconfdir@
 target_alias = @target_alias@
 lib_LTLIBRARIES = libdsrpdb.la
 noinst_HEADERS = pdb_utils.h Residue_data.h
-AM_CPPFLAGS = -I../include -pg
+AM_CPPFLAGS = -I../include
 libdsrpdb_la_SOURCES = Residue.cc Protein.cc Residue_data.cc Protein_pdb.cc pdb_utils.cc Model.cc PDB.cc align.cc distance.cc Error_logger.cc
 libdsrpdb_la_LDFLAGS = -static
 all: all-am