Remove unused travis.yml

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>

.travis.yml

-notifications:
-  email:
-    - spice-devel@lists.freedesktop.org
-  irc:
-    channels:
-      - "irc.gimp.net#spice"
-    on_success: change
-    on_failure: always
-sudo: required
-dist: trusty
-language: c
-compiler:
-  - clang
-  - gcc
-addons:
-  apt:
-    packages:
-      - automake
-      - autoconf
-      - autoconf-archive
-      - pkg-config
-      - libglib2.0-dev
-      - libnss3-dev
-script:
-  - ./autogen.sh --prefix=/usr && make all && make distcheck