Remove UnaryOperator used as throw from EOG pass and spec

[KuechA]

Currently, the EvaluationOrderGraphPass handles the UnaryOperator with operatorCode "throw" as a throw expression. Since all frontends have been migrated to use the ThrowExpression, this is obsolete. The eog-spec-file is updated and the pass too.

Closes #1817

[codecov]

Codecov Report

Attention: Patch coverage is 84.21053% with 3 lines in your changes missing coverage. Please review.

Project coverage is 75.24%. Comparing base (692023f) to head (5ef8714).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...hofer/aisec/cpg/passes/EvaluationOrderGraphPass.kt	84.21%	2 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
...hofer/aisec/cpg/passes/EvaluationOrderGraphPass.kt	89.59% <84.21%> (+0.29%)	⬆️

... and 1 file with indirect coverage changes

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