remove const in param for EnableGravity and EnableWind

Signed-off-by: youhy <[email protected]>

include/sdf/Link.hh

@@ -324,7 +324,6 @@ namespace sdf
     /// \brief Check if this link should be subject to gravity.
     /// If true, this link should be affected by gravity.
     /// \return true if the model should be subject to gravity, false otherwise.
-    /// \sa bool Model::EnableGravity
     public: bool EnableGravity() const;
 
     /// \brief Set whether this link should be subject to wind.
@@ -336,7 +335,6 @@ namespace sdf
     /// \brief Set whether this link should be subject to gravity.
     /// \param[in] _enableGravity True or false depending on whether the link
     /// should be subject to gravity.
-    /// \sa Model::SetEnableGravity(bool)
     public: void SetEnableGravity(bool _enableGravity);
 
     /// \brief Add a collision to the link.

src/Link.cc

@@ -591,13 +591,13 @@ bool Link::EnableGravity() const
 }
 
 /////////////////////////////////////////////////
-void Link::SetEnableWind(const bool _enableWind)
+void Link::SetEnableWind(bool _enableWind)
 {
   this->dataPtr->enableWind = _enableWind;
 }
 
 /////////////////////////////////////////////////
-void Link::SetEnableGravity(const bool _enableGravity)
+void Link::SetEnableGravity(bool _enableGravity)
 {
   this->dataPtr->enableGravity = _enableGravity;
 }