[master] 6c3ce87fc Don't need to update brew anymore

[Federico G. Schwindt]

commit 6c3ce87fc182c6bde3a6ca30c7fcf58b0cf58504
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Mon Aug 3 16:04:17 2020 +0100

    Don't need to update brew anymore

diff --git a/.travis.yml b/.travis.yml
index 93365e41a..cf12dcde0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -83,7 +83,6 @@ jobs:
             - docutils
             - nghttp2
             - sphinx-doc
-          update: true
       before_script:
         - export PATH="/usr/local/opt/sphinx-doc/bin:$PATH"
         - ./autogen.sh