Update build badge, unpin naomi branch

DESCRIPTION

@@ -79,8 +79,6 @@ LinkingTo:
 Remotes:
     bergant/datamodelr,
     first90=mrc-ide/first90release@gh-actions,
-    mrc-ide/naomi.options,
-    mrc-ide/testthat.buildkite,
-    mrc-ide/eppasm@import-unzip
+    mrc-ide/naomi.options
 Config/testthat/edition: 3
 Config/testthat/parallel: true

README.md

@@ -1,6 +1,6 @@
 ## Naomi <img src='images/naomi_hex.png' align="right" height="139" />
 
-[![Travis build status](https://travis-ci.org/mrc-ide/naomi.svg?branch=master)](https://travis-ci.org/mrc-ide/naomi)
+![R CMD check](https://github.com/mrc-ide/naomi/actions/workflows/R-CMD-check.yml/badge.svg)
 [![Codecov test coverage](https://codecov.io/gh/mrc-ide/naomi/branch/master/graph/badge.svg)](https://codecov.io/gh/mrc-ide/naomi?branch=master)
 
 Naomi model for subnational HIV estimates