Remove MathOptFormat as a dependency

[odow]

With latest JuliaFormatter changes.

[codecov]

Codecov Report

Merging #289 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #289   +/-   ##
=======================================
  Coverage   93.87%   93.87%           
=======================================
  Files          20       20           
  Lines        1683     1683           
=======================================
  Hits         1580     1580           
  Misses        103      103

Impacted Files	Coverage Δ
src/SDDP.jl	100% <ø> (ø)	⬆️
src/plugins/bellman_functions.jl	97.04% <ø> (ø)	⬆️
src/plugins/risk_measures.jl	95.04% <100%> (ø)	⬆️
src/algorithm.jl	98.09% <100%> (ø)	⬆️

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