[glom] configure.ac: Revert request for Python >=3

[Murray Cumming <murrayc src gnome org>]

commit d93ffd4fefb4159a90eb67f7b09eb799de70bc65
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Sep 11 21:51:29 2013 +0200

    configure.ac: Revert request for Python >=3

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ed46277..30cc2c5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -228,7 +228,8 @@ AM_PATH_PYTHON
 # To specify a particular python version set an environment variable.
 # For instance: PYTHON=python3.3
 # See http://www.gnu.org/software/autoconf-archive/ax_python_devel.html
-AX_PYTHON_DEVEL(>= '3.0.0')
+# TODO: Use AX_PYTHON_DEVEL(>= '3.0.0') when we can make the build use the python3 version of boost-python 
by default.
+AX_PYTHON_DEVEL
 
 # Get the CFLAGS and LIBS for boost::python.
 # To use a non-default Boost::Python library, for instance to use