[cogl/cogl-1.22] Do not explicitly enable GLES v1 on distcheck

[Emmanuele Bassi <ebassi src gnome org>]

commit f4635b6bd2a46413f7ee5c772e77c4cc60430fae
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Aug 21 11:37:42 2015 +0100

    Do not explicitly enable GLES v1 on distcheck
    
    Mesa packagers disabled it explicitly on Fedora since 2013, and it makes
    sense not to have people target an obsolete, barely supported API.

 Makefile.am |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index a0c0c76..c018884 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,7 +36,6 @@ DISTCHECK_CONFIGURE_FLAGS = \
        --enable-gtk-doc \
        --enable-maintainer-flags \
        --enable-profile \
-       --enable-gles1 \
        --enable-gles2 \
        --enable-gl \
        --enable-xlib-egl-platform \