Reapplied clang-tidy filters

- modernize-use-nullptr
- modernize-redundant-void-arg
- readability-simplify-boolean-expr
- misc-redundant-expression
- readability-redundant-control-flow
- readability-avoid-const-params-in-decls

rtengine/EdgePreservingDecomposition.cc

@@ -552,7 +552,7 @@ bool MultiDiagonalSymmetricMatrix::CreateIncompleteCholeskyFactorization(int Max
     return true;
 }
 
-void MultiDiagonalSymmetricMatrix::KillIncompleteCholeskyFactorization(void)
+void MultiDiagonalSymmetricMatrix::KillIncompleteCholeskyFactorization()
 {
     delete IncompleteCholeskyFactorization;
 }