Remove deps/build.jl

[Aether-create]

Reason for Removal

The deps/build.jl script has become redundant as all dependencies are now properly specified in the Project.toml file. This change simplifies the project structure and dependency management process.

Key Points

1. All required dependencies are listed in Project.toml, making Pkg.add() calls in build.jl unnecessary.
2. Julia's package manager can handle dependency installation and resolution using Pkg.instantiate() based on Project.toml alone.
3. Removing build.jl reduces maintenance overhead and potential conflicts between manually added packages and those specified in Project.toml.
4. For users and contributors, this change streamlines the setup process, relying solely on Julia's built-in package management capabilities.

[CLAassistant]

All committers have signed the CLA.

[JKRT]

@Aether-create, I think you are right. The CI does handle some of these things for this package automatically now. For this package removing build.jl should be fine.