Remove spurious ACLOCAL_FLAGS variable from autogen.sh.

And we can drop the mkdir here now too, since we actually include things
of our own in that directory now so it does already exist.

Author: Ron

autogen.sh

@@ -7,8 +7,5 @@ test -n "$srcdir" && cd "$srcdir"
 
 echo "Updating build configuration files, please wait...."
 
-mkdir -p m4
-
-ACLOCAL_FLAGS="-I m4"
 autoreconf -if