Remove unused input directory specification from model configuration

[soaressgabriel]

Description

• There is an unnecessary field in the configuration files that specifies the input data directory;
• This field is currently not utilized by the application, leading to potential confusion for users who might attempt to configure it expecting a change in application behavior;
• Removing this field will simplify the configuration process and eliminate any misunderstanding regarding the application's configuration.

Solution

• The proposed solution is to remove the field specifying the input data directory from both the INI and JSON configuration file formats;
• This change will streamline the configuration files and focus on the settings that are actually in use;
• It will also make the configuration process more straightforward for new and existing users, as they will no longer encounter an unused option.

Alternative solution(s)

• N/A

Additional context

• N/A

[soaressgabriel]

Issue reopened to update related documentation.