Remove support for (extremely outdated) alternate backends.

Author: coleifer

README.md

@@ -41,7 +41,3 @@ Persistent structures implemented on top of Hashes. Supports secondary indexes t
 ![](http://media.charlesleifer.com/blog/photos/p1420743625.21.png)
 
 Please open a [github issue](https://github.com/coleifer/walrus/issues/new) and I will try my best to fix it!
-
-### Alternative Backends
-
-Walrus also can integrate with the Redis-like databases [rlite](https://github.com/seppo0010/rlite), [ledis](http://ledisdb.io/), and [vedis](http://vedis.symisc.net). Check the [documentation](https://walrus.readthedocs.io/en/latest/alt-backends.html) for more details.

docs/alt-backends.rst

@@ -57,7 +57,6 @@ Contents:
    streams
    models
    api
-   alt-backends
    contributing
 
 

docs/index.rst

@@ -13,19 +13,6 @@
 from walrus.tests.rate_limit import *
 from walrus.tests.streams import *
 
-try:
-    from walrus.tusks.ledisdb import TestWalrusLedis
-except ImportError:
-    pass
-try:
-    from walrus.tusks.rlite import TestWalrusLite
-except ImportError:
-    pass
-try:
-    from walrus.tusks.vedisdb import TestWalrusVedis
-except ImportError:
-    pass
-
 
 if __name__ == '__main__':
     unittest.main(argv=sys.argv)