diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f5a513a..c6dac75 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [ '1.20', '1.21' , '1.22' ,]
+        go-version: [ '1.21' , '1.22' ,]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Go
diff --git a/test/common.go b/test/common.go
index f9f76f2..3678250 100644
--- a/test/common.go
+++ b/test/common.go
@@ -25,14 +25,6 @@ func subscribeToResource(t *testing.T, s *Session, c *Conn, rid string) string {
 	return subscribeToCustomResource(t, s, c, rid, rsrc)
 }
 
-func subscribeToCachedResource(t *testing.T, s *Session, c *Conn, rid string) string {
-	rsrc, ok := resources[rid]
-	if !ok {
-		panic("no resource named " + rid)
-	}
-	return subscribeToCustomResourceExt(t, s, c, rid, rsrc, true)
-}
-
 func subscribeToCustomResource(t *testing.T, s *Session, c *Conn, rid string, rsrc resource) string {
 	return subscribeToCustomResourceExt(t, s, c, rid, rsrc, false)
 }