README: Remove Travis-ci build badge

Geod24 · John-Colvin · commit ef3e8ed9a247 · 2022-06-14T18:18:25.000+01:00
It's a checkmark next to the commit now,
as we use Github actions.
diff --git a/README.md b/README.md
@@ -1,5 +1,3 @@
-[![Build Status](https://travis-ci.org/DlangScience/dstats.svg?branch=master)](https://travis-ci.org/DlangScience/dstats)
-
 dstats
 ======
 

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,3 @@`
`1`		`-[![Build Status](https://travis-ci.org/DlangScience/dstats.svg?branch=master)](https://travis-ci.org/DlangScience/dstats)`
`2`		`-`
`3`	`1`	`dstats`
`4`	`2`	`======`
`5`	`3`