Don't copy images for the standalone hash and unordered documentation, was only

really required before the libraries were integrated into boost.

[SVN r51263]

libs/functional

@@ -1 +1 @@
-Subproject commit 9df97a85973586234ff5fd287571cd408298f625
+Subproject commit 2c291488b62b0a4cc21270b2ce8eb7b0d406e2de

libs/unordered

@@ -1 +1 @@
-Subproject commit 971224a282d28c757346ea38634b9ca5772529da
+Subproject commit 1e73578ab67c737620f5dda57be073d94c8ca12f