nx-libs.spec: drop ugly sed hack to push optflags to build system.

debian/changelog

@@ -20,6 +20,7 @@ nx-libs (2:3.5.0.33-0x2go1) UNRELEASED; urgency=low
       https://bugs.centos.org/view.php?id=13779 are resolved.
       Backported from Arctica GH 3.6.x branch.
       v2: backport to nx-libs 3.5.0.x (Mihai Moldovan)
+    - Drop ugly sed hack to push optflags to build system.
   * debian/:
     - Add x2goagent.options file for compatibility with x2goserver nightly.
   * debian/roll-tarballs.sh:

nx-libs.spec

@@ -733,8 +733,6 @@ rm -Rf .preserve/
 rm -Rf nx*/configure nx*/autom4te.cache*
 # Install into /usr
 sed -i -e 's,/usr/local,/usr,' nx-X11/config/cf/site.def
-# Use rpm optflags
-sed -i -e 's#-O3#%{optflags}#' nx-X11/config/cf/host.def
 # Use multilib dirs
 # We're installing binaries into %%{_libdir}/nx/bin rather than %%{_libexedir}/nx
 # because upstream expects libraries and binaries in the same directory