chore: remove Deno 1.x from CI

Author: lambdalisue

.github/workflows/test.yml

@@ -26,7 +26,6 @@ jobs:
         runner:
           - ubuntu-latest
         deno_version:
-          - "1.x"
           - "2.x"
     runs-on: ${{ matrix.runner }}
     steps:
@@ -61,7 +60,6 @@ jobs:
           - macos-latest
           - ubuntu-latest
         deno_version:
-          - "1.x"
           - "2.x"
         host_version:
           - vim: "v9.1.0448"