radix tree test suite: Remove obsolete CONFIG

radix-tree.c doesn't use these CONFIG options any more.
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>

tools/testing/radix-tree/generated/autoconf.h

 #define CONFIG_RADIX_TREE_MULTIORDER 1
-#define CONFIG_SHMEM 1
-#define CONFIG_SWAP 1