revert an improper location change to anonymous authors

Reverting pull request #2326.  For some reason, closing a
pull request does not prevent it from being used.
Pull request #2327 was based on top of pull request #2326,
so even though pull request #2326 was closed, accepting
pull request #2327 causes pull request #2326 to be
accepted, even when the files used by pull request #2327
are completely independent from pull request #2326!  *sigh*

author/Anonymous_1984.json

@@ -4,7 +4,7 @@
     "author_handle" : "Anonymous_1984",
     "full_name" : "Anonymous 1984",
     "sort_word" : "anonymous",
-    "location_code" : "XX",
+    "location_code" : "US",
     "email" : null,
     "url" : null,
     "alt_url" : null,

author/Anonymous_2001.json

@@ -4,7 +4,7 @@
     "author_handle" : "Anonymous_2001",
     "full_name" : "Anonymous 2001",
     "sort_word" : "anonymous",
-    "location_code" : "XX",
+    "location_code" : "GB",
     "email" : null,
     "url" : null,
     "alt_url" : null,

author/Anonymous_2005.json

@@ -4,7 +4,7 @@
     "author_handle" : "Anonymous_2005",
     "full_name" : "Anonymous 2005",
     "sort_word" : "anonymous",
-    "location_code" : "XX",
+    "location_code" : "ZZ",
     "email" : null,
     "url" : null,
     "alt_url" : null,