Remove description about RPC

We ended up removing RPC dump function.

See also: fluent/fluentd#3680

Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>

deployment/command-line-option.md

@@ -210,8 +210,6 @@ Then Fluentd dumps files as following. Each process id is automatically added to
 
 As for non-Windows, you don't have to use this function because you can manually send SIGCONT to each process. Although you can use this function on non-Windows, this just sends SIGCONT to the supervisor process, so you can get only the status of the supervisor process.
 
-The same feature is available in [RPC](rpc.md). On non-Windows, You can use this to easily get all processes' status.
-
 ## `fluent-cap-ctl`
 
 Control Linux Capability for Fluentd. See [Linux Capability](linux-capability.md) article.

deployment/rpc.md

@@ -30,7 +30,6 @@ As evident from the output above, each endpoint returns a JSON object as its res
 | `/api/processes.interruptWorkers` | [SIGINT](signals.md#sigint-or-sigterm) | Stops the daemon. |
 | `/api/processes.killWorkers` | [SIGTERM](signals.md#sigint-or-sigterm) | Stops the daemon. |
 | `/api/processes.flushBuffersAndKillWorkers` | [SIGUSR1](signals.md#sigusr1) and [SIGTERM](signals.md#sigint-or-sigterm) | Flushes buffer and stops the daemon. |
-| `/api/processes.dump` | [SIGCONT](signals.md#sigcont) | Make all Fluentd processes dump their status. |
 | `/api/plugins.flushBuffers` | [SIGUSR1](signals.md#sigusr1) | Flushes the buffered messages. |
 | `/api/config.gracefulReload` | [SIGUSR2](signals.md#sigusr2) | Reloads configuration. |
 | `/api/config.reload` | [SIGHUP](signals.md#sighup) | Reloads configuration. |

deployment/trouble-shooting.md

@@ -65,7 +65,7 @@ $ fluentd .. -vv
 
 Fluentd uses [SIGDUMP](https://github.com/frsyuki/sigdump) for dumping fluentd internal information to a local file, e.g. thread dump, object allocation, etc. If you have a problem with fluentd like process hang, please send `SIGCONT` to fluentd parent and child processes.
 
-On Windows, you can use [fluent-ctl](command-line-option.md#fluent-ctl) or [RPC](rpc.md).
+On Windows, you can use [fluent-ctl](command-line-option.md#fluent-ctl).
 
 ## High CPU Usage Issue