[TypeDeclaration] Remove ArrowFunction from ReturnTypeFromReturnDirectArrayRector and ReturnTypeFromReturnNewRector

[samsonasik]

Part of resolve this issue effort:

• [DX] Allow more granulated return type completion, to separate from closures and makes easier to review rector#8678

Ref from PR comment:

• [TypeDeclaration] Separate Closure return type #6029 (comment)

For ArrowFunction, there is already rule that cover return type on ArrowFunction

• AddArrowFunctionReturnTypeRector

so no need to duplicate process in the following rules:

• ReturnTypeFromReturnDirectArrayRector
• ReturnTypeFromReturnNewRector

[samsonasik]

All checks have passed 🎉 @TomasVotruba I think it is ready.

[TomasVotruba]

Thanks 👏