test: remove .travis.yml

Travis CI was generating a lot of false positives (or rather, false
negatives - tests that fail due to the environment they run in) and
it's been in a continuous error state for days now.

Remove it, we'll set up something ourselves.

.travis.yml

@@ -1,9 +0,0 @@
-language: node_js
-
-script:
-  - "make test"
-
-notifications:
-  email: false
-  irc:
-    - "irc.freenode.net#libuv"

README.md

@@ -1,4 +1,4 @@
-# libuv [![Build Status](https://secure.travis-ci.org/joyent/libuv.png)](http://travis-ci.org/joyent/libuv)
+# libuv
 
 libuv is a new platform layer for Node. Its purpose is to abstract IOCP on
 Windows and epoll/kqueue/event ports/etc. on Unix systems. We intend to