This just prevents a false negative ERROR warning when, for some unknown
reason, a user attempts to turn on the module rpc even though it's already going
to be on.
This removes the error added in #20597 in favor of a log message at
error level. Failing to start broke a bunch of people's setups and is
probably not the right thing to do for this check.
* rpc: Make HTTP server timeout values configurable
* rpc: Remove flags for setting HTTP Timeouts, configuring via .toml is sufficient.
* rpc: Replace separate constants with a single default struct.
* rpc: Update HTTP Server Read and Write Timeouts to 30s.
* rpc: Remove redundant NewDefaultHTTPTimeouts function.
* rpc: document HTTPTimeouts.
* rpc: sanitize timeout values for library use
