Game: Remove Object Placement feature from Game Simulator

[lhw-1]

Description

Partially addresses #2806. This PR will be in draft for now until we have finalized the decision to remove the Object Placement feature.

This PR removes the Object Placement feature completely from the Game Simulator. As discussed in the linked issue, the Object Placement feature is currently not in use by the story-writers (myself), and is inaccessible to the students. Hence, there are no active users, and may need to be retired.

While there certainly is potential for the Object Placement feature to play a role in the future (e.g. being able to generate completely new asset combinations for the game and the CMR feature), it can be retired for now, and we can re-implement it with only the necessary features when needed.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Code quality improvements

This would be considered breaking change by definition; however, the rest of the Game Simulator is quite independent from the Object Placement feature, and the removal of this feature should not cause any major changes to the other functionalities.

How to test

Build and deploy the frontend, and check that all other functionalities continue to work as expected.

Checklist

• I have tested this code
• I have updated the documentation

[coveralls]

Pull Request Test Coverage Report for Build 8029216306

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.7%) to 37.948%

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Totals
Change from base Build 8029208794:	0.7%
Covered Lines:	5811
Relevant Lines:	14370

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💛 - Coveralls

[RichDom2185]

Looks goods, I don't see why there's a need to keep it if you really think it's not of use. I'll approve this and feel free to merge if you want to.