Clean up old automake options.

These were left as a convenience for those on old systems.
Automake 1.11 is pretty widely available now.

Makefile.am

 ## Process this file with automake to produce Makefile.in
 
-#Old options: these should still work if you don't have automake 1.11 yet.
-#AUTOMAKE_OPTIONS = foreign 1.7 dist-zip dist-bzip2
 AUTOMAKE_OPTIONS = foreign 1.11 dist-zip dist-xz
-
 ACLOCAL_AMFLAGS=-I m4
 
 if THEORA_ENABLE_EXAMPLES
@@ -14,7 +11,6 @@ endif
 
 SUBDIRS = lib include doc tests m4 $(EXAMPLES_DIR)
 
-
 EXTRA_DIST = \
 	README CHANGES COPYING LICENSE \
 	autogen.sh win32 macosx symbian SConstruct \