Remove special module handling for eth_callBundle

[mattsse]

Describe the feature

when we introduced this we weren't sure if we should consider this part of the regular eth namespace and opted for an additional config:

reth/crates/rpc/rpc-server-types/src/module.rs

Lines 258 to 262 in 603e39a

	/// For single non-standard `eth_` namespace call `eth_callBundle`
	///
	/// This is separate from [`RethRpcModule::Eth`] because it is a non standardized call that
	/// should be opt-in.
	EthCallBundle,

but now we can simply consider this part of the regular eth_ namespace and enable it by default because useful

TODO

• remove EthCallBundle module and install ethcallbundle if Eth is enabled

Additional context

No response

[rutefig]

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

Working currently with another project in Rust in the Ethereum Ecossystem, I want to contribute more for meaningful projects on the Ecosystem.