Remove fluent-plugin-file-alternative from recommended plugins
Remove fluent-plugin-file-alternative from recommended plugins

Because Fluentd v1's built-in file output plugin has all features of fluent-plugin-file-alternative.

Signed-off-by: Kenji Okimoto <7a4b90a0a1e6fc688adec907898b6822ce215e6c@clear-code.com>

fluent/fluentd-ui,fluent/fluentd-ui,fluent/fluentd-ui