test just two coq versions, that should suffice

.gitlab-ci.yml

@@ -27,11 +27,10 @@ variables:
 
 ## Build jobs
 
-build-coq.dev:
+build-coq.8.10.1:
   <<: *template
   variables:
-    OCAML: "ocaml-base-compiler.4.07.0"
-    OPAM_PINS: "coq version dev"
+    OPAM_PINS: "coq version 8.10.1"
 
 build-coq.8.9.0:
   <<: *template
@@ -42,11 +41,6 @@ build-coq.8.9.0:
   tags:
   - fp-timing
 
-build-coq.8.8.2:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.8.2"
-
 build-iris.dev:
   <<: *template
   variables:

README.md

@@ -6,7 +6,7 @@ This is the Coq development accompanying RBrlx.
 
 This version is known to compile with:
 
- - Coq 8.8.2 / 8.9.0
+ - Coq 8.9.0 / 8.10.1
  - A development version of [GPFSL].
 
 The easiest way to install the correct versions of the dependencies is through