remove_gauge_dependence! overloads

[lkdvos]

After MatrixAlgebraKit v0.6.6, these functions are now simply overloaded and the block implementation can be re-used

[codecov]

Codecov Report

❌ Patch coverage is 62.50000% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/factorizations/pullbacks.jl	62.50%	9 Missing ⚠️

Files with missing lines	Coverage Δ
src/factorizations/pullbacks.jl	60.78% <62.50%> (+3.64%)	⬆️

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[lkdvos]

Needs QuantumKitHub/MatrixAlgebraKit.jl#221
Bypassed this by using default arguments

[Jutho]

I assume that if !haskey(inds, c), then indeed ΔV doesn't have such a block either and Δv is just an empty matrix? But due to the fact that a c block can exist in V and D and the union semantics of foreachblock, such c would still be generated by the iterator.

[lkdvos]

Yes, although actually in the current implementation this never happens since all sectors are always present in the inds that come from the truncation implementations, possibly with inds[c] empty.