[NL] removed explicit from multi-arg ctors

NumLib/ODESolver/ConvergenceCriterionDeltaX.h

@@ -19,7 +19,7 @@ namespace NumLib
 class ConvergenceCriterionDeltaX final : public ConvergenceCriterion
 {
 public:
-    explicit ConvergenceCriterionDeltaX(
+    ConvergenceCriterionDeltaX(
         boost::optional<double>&& absolute_tolerance,
         boost::optional<double>&& relative_tolerance,
         MathLib::VecNormType norm_type);

NumLib/ODESolver/ConvergenceCriterionPerComponentDeltaX.h

@@ -21,7 +21,7 @@ class ConvergenceCriterionPerComponentDeltaX
     : public ConvergenceCriterionPerComponent
 {
 public:
-    explicit ConvergenceCriterionPerComponentDeltaX(
+    ConvergenceCriterionPerComponentDeltaX(
         std::vector<double>&& absolute_tolerances,
         std::vector<double>&& relative_tolerances,
         MathLib::VecNormType norm_type);

NumLib/ODESolver/ConvergenceCriterionPerComponentResidual.h

@@ -22,7 +22,7 @@ class ConvergenceCriterionPerComponentResidual
     : public ConvergenceCriterionPerComponent
 {
 public:
-    explicit ConvergenceCriterionPerComponentResidual(
+    ConvergenceCriterionPerComponentResidual(
         std::vector<double>&& absolute_tolerances,
         std::vector<double>&& relative_tolerances,
         MathLib::VecNormType norm_type);

NumLib/ODESolver/ConvergenceCriterionResidual.h

@@ -19,7 +19,7 @@ namespace NumLib
 class ConvergenceCriterionResidual final : public ConvergenceCriterion
 {
 public:
-    explicit ConvergenceCriterionResidual(
+    ConvergenceCriterionResidual(
         boost::optional<double>&& absolute_tolerance,
         boost::optional<double>&& relative_tolerance,
         MathLib::VecNormType norm_type);