remove comments

.travis.yml

@@ -1,21 +1,7 @@
 language: go
-
-# Setup database services required during tests.
 services:
   - redis-server
-
-# Force-enable Go modules. This will be unnecessary when Go 1.12 lands.
-env:
-  - GO111MODULE=on
-
-# You don't need to test on very old version of the Go compiler. It's the user's
-# responsibility to keep their compilers up to date.
 go:
   - "1.10"
-
-# Only clone the most recent commit.
-git:
-  depth: 1
-
 script:
-  - go test -v -race ./...  # Run all the tests with the race detector enabled
+  - go test -v -race ./...