nfs-utils: Do not pass CFLAGS to gcc while building

Do not pass CFLAGS/LDFLAGS to gcc while building, The needed flags has
been passed by xxx_CFLAGS=$(CFLAGS_FOR_BUILD).

Upstream-Status: Pending

Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
---
 tools/locktest/Makefile.am |    2 ++
 tools/rpcgen/Makefile.am   |    2 ++
 2 files changed, 4 insertions(+)

diff --git a/tools/locktest/Makefile.am b/tools/locktest/Makefile.am
index 3156815..1729fd1 100644
--- a/tools/locktest/Makefile.am
+++ b/tools/locktest/Makefile.am
@@ -1,6 +1,8 @@
 ## Process this file with automake to produce Makefile.in
 
 CC=$(CC_FOR_BUILD)
+CFLAGS=
+LDFLAGS=
 LIBTOOL = @LIBTOOL@ --tag=CC
 
 noinst_PROGRAMS = testlk
diff --git a/tools/rpcgen/Makefile.am b/tools/rpcgen/Makefile.am
index 8a9ec89..8bacdaa 100644
--- a/tools/rpcgen/Makefile.am
+++ b/tools/rpcgen/Makefile.am
@@ -1,6 +1,8 @@
 ## Process this file with automake to produce Makefile.in
 
 CC=$(CC_FOR_BUILD)
+CFLAGS=
+LDFLAGS=
 LIBTOOL = @LIBTOOL@ --tag=CC
 
 noinst_PROGRAMS = rpcgen
-- 
1.7.9.5