Remove Go 1.11 Build Target (#1109)

Author: SyntaxNode

.travis.yml

@@ -1,7 +1,6 @@
 language: go
 
 go:
-  - '1.11.4'
   - '1.12'
   - '1.13'
 

README.md

@@ -18,7 +18,7 @@ For more information, see:
 
 ## Installation
 
-First install [Go 1.11](https://golang.org/doc/install) latest version (1.11.4) or later.
+First install [Go 1.12](https://golang.org/doc/install) latest version.
 Note that prebid-server is using [Go modules](https://blog.golang.org/using-go-modules).
 If using Go version <1.13 and are inside GOPATH `GO111MODULE` needs to be set to `GO111MODULE=on`.
 

docs/developers/automated-tests.md

@@ -1,8 +1,5 @@
 # Automated Tests
 
-**NOTE**: The automated tests will not pass on Go 1.11 due to [this bug](https://github.com/golang/go/issues/27275) in Go.
-This issue has been fixed in Go 1.11.1.
-
 This project uses [TravisCI](https://travis-ci.org/) to make sure that every PR passes automated tests.
 To reproduce these tests locally, use: