feat(behavior_path_planner): remove max_module_size param

Description

The max_module_size param has been removed from the behavior_path_planner scene_module_manager.param.yaml file. This param was unnecessary and has been removed to simplify the configuration.

parameter change for the PR

Tests performed

[x] run psim

Effects on system behavior

Not applicable.

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autowarefoundation / autoware_launch