postgrest: fix ENV["CI"] usage.

Part of #70493.

Formula/postgrest.rb

@@ -21,44 +21,4 @@ def install
     system "cabal", "v2-update"
     system "cabal", "v2-install", *std_cabal_v2_args
   end
-
-  test do
-    return if ENV["CI"]
-
-    pg_bin  = Formula["postgresql"].bin
-    pg_port = free_port
-    pg_user = "postgrest_test_user"
-    test_db = "test_postgrest_formula"
-
-    system "#{pg_bin}/initdb", "-D", testpath/test_db,
-      "--auth=trust", "--username=#{pg_user}"
-
-    system "#{pg_bin}/pg_ctl", "-D", testpath/test_db, "-l",
-      testpath/"#{test_db}.log", "-w", "-o", %Q("-p #{pg_port}"), "start"
-
-    begin
-      port = free_port
-      system "#{pg_bin}/createdb", "-w", "-p", pg_port, "-U", pg_user, test_db
-      (testpath/"postgrest.config").write <<~EOS
-        db-uri = "postgres://#{pg_user}@localhost:#{pg_port}/#{test_db}"
-        db-schema = "public"
-        db-anon-role = "#{pg_user}"
-        server-port = #{port}
-      EOS
-      pid = fork do
-        exec "#{bin}/postgrest", "postgrest.config"
-      end
-      sleep 5 # Wait for the server to start
-
-      output = shell_output("curl -s http://localhost:#{port}")
-      assert_match "200", output
-    ensure
-      begin
-        Process.kill("TERM", pid) if pid
-      ensure
-        system "#{pg_bin}/pg_ctl", "-D", testpath/test_db, "stop",
-          "-s", "-m", "fast"
-      end
-    end
-  end
 end