Remove duplicate API for NLS

[github-actions[bot]]

Package name	latest	stable
CaNNOLeS.jl
DCISolver.jl
DerivativeFreeSolvers.jl
JSOSolvers.jl
NLPModelsIpopt.jl
OptimizationProblems.jl
Percival.jl
QuadraticModels.jl
SolverBenchmark.jl
SolverTools.jl

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.35% :warning:

Comparison is base (9116f89) 95.47% compared to head (9c174a8) 95.12%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #200 +/- ## ========================================== - Coverage 95.47% 95.12% -0.35% ========================================== Files 14 14 Lines 1744 1621 -123 ========================================== - Hits 1665 1542 -123 Misses 79 79 ``` | [Files Changed](https://app.codecov.io/gh/JuliaSmoothOptimizers/ADNLPModels.jl/pull/200?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers) | Coverage Δ | | |---|---|---| | [src/nls.jl](https://app.codecov.io/gh/JuliaSmoothOptimizers/ADNLPModels.jl/pull/200?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers#diff-c3JjL25scy5qbA==) | `98.87% <ø> (-0.36%)` | :arrow_down: | | [src/nlp.jl](https://app.codecov.io/gh/JuliaSmoothOptimizers/ADNLPModels.jl/pull/200?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers#diff-c3JjL25scC5qbA==) | `99.22% <100.00%> (ø)` | |

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