test: don't require Apache Arrow support

Author: kou

test/test-remote.rb

@@ -95,7 +95,6 @@ def test_send
     groonga_version = Gem::Version.new(values["version"])
     expected = [
       "alloc_count",
-      "apache_arrow",
       "cache_hit_rate",
       "command_version",
       "default_command_version",
@@ -109,6 +108,9 @@ def test_send
       "uptime",
       "version",
     ]
+    if values["features"]["apache_arrow"]
+      expected << "apache_arrow"
+    end
     if groonga_version >= Gem::Version.new("14.0.0")
       expected << "default_n_workers"
       expected << "n_workers"