fixup! bison: add automake as build dependency

fixup for af247599: Put automake
in $PATH instead of creating its own environment variable.

component/bison/buildout.cfg

@@ -13,9 +13,8 @@ shared = true
 url = http://ftp.gnu.org/gnu/bison/bison-3.3.2.tar.xz
 md5sum = c9b552dee234b2f6b66e56b27e5234c9
 environment =
-  AUTOMAKE=${automake:location}/bin/automake
   M4=${m4:location}/bin/m4
-  PATH=${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
+  PATH=${automake:location}/bin:${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
 patch-options = -p1
 patches =
   ${:_profile_base_location_}/01_inhibit_example_generation#ee2df22601a56d738939fa760f9dc19b