v32 removals

[albi3ro]

This PR completes the removals for:

• qchem.molecular_hamiltonian keyword arguments grouping_type and grouping_method
• zyz_decompposition and xyx_decomposition
• LieAlgebraOptimizer
• Operation.base_name
• QuantumScript.name
• qml.math.reduced_dm
• qml.specs keys num_operations, num_used_wires, gate_types, gate_sizes and depth

The do_queue keyword is not removed in this PR, as that will change a lot of code.

[albi3ro]

[sc-38961] [sc-38962] [sc-38963]

[codecov]

Codecov Report

Merging #4301 (6f1b19c) into master (454134e) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4301      +/-   ##
==========================================
- Coverage   99.79%   99.79%   -0.01%     
==========================================
  Files         352      351       -1     
  Lines       32164    32093      -71     
==========================================
- Hits        32097    32026      -71     
  Misses         67       67              

Impacted Files	Coverage Δ
pennylane/math/__init__.py	100.00% <ø> (ø)
pennylane/math/quantum.py	100.00% <ø> (ø)
pennylane/operation.py	97.32% <ø> (-0.02%)	⬇️
pennylane/ops/op_math/adjoint.py	100.00% <ø> (ø)
pennylane/ops/op_math/controlled.py	100.00% <ø> (ø)
pennylane/ops/op_math/pow.py	100.00% <ø> (ø)
pennylane/optimize/__init__.py	100.00% <ø> (ø)
pennylane/optimize/riemannian_gradient.py	100.00% <ø> (ø)
pennylane/qinfo/transforms.py	100.00% <ø> (ø)
pennylane/transforms/__init__.py	100.00% <ø> (ø)
... and 6 more