Removed snapshot.

Author: jcs090218

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest]
-        emacs_version: [23.4, 24.1, 24.2, 24.3, 24.4, 24.5, 25.1, 25.2, 25.3, 26.1, 26.2, 26.3, 27.1, snapshot]
+        emacs_version: [23.4, 24.1, 24.2, 24.3, 24.4, 24.5, 25.1, 25.2, 25.3, 26.1, 26.2, 26.3, 27.1]
 
     steps:
     - uses: actions/checkout@v2