[ci] remove trusty and sudo from .travis.yml

diff --git a/.travis.yml b/.travis.yml
index 6ec4fde..4de5719 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -52,10 +52,6 @@ matrix:
         - python -m pip install --upgrade pip
       env: PATH=/c/Python38:/c/Python38/Scripts:$PATH
 
-# use trusty
-dist: trusty
-sudo: required
-
 addons:
   apt:
     packages: