Revert "clamp must use the API of sot-core"

This reverts commit 793a089d.

include/sot-core/clamp-workspace.h

@@ -37,7 +37,21 @@ namespace ml = maal::boost;
 #include <sot-core/matrix-rotation.h>
 #include <sot-core/matrix-homogeneous.h>
 #include <sot-core/matrix-twist.h>
-#include <sot-core/sot-core-api.h>
+
+
+/* --------------------------------------------------------------------- */
+/* --- API ------------------------------------------------------------- */
+/* --------------------------------------------------------------------- */
+
+#if defined (WIN32) 
+#  if defined (clamp_workspace_EXPORTS)
+#    define SOTCLAMPWORKSPACE_EXPORT __declspec(dllexport)
+#  else  
+#    define SOTCLAMPWORKSPACE_EXPORT __declspec(dllimport)
+#  endif 
+#else
+#  define SOTCLAMPWORKSPACE_EXPORT
+#endif
 
 namespace sot {
 namespace dg = dynamicgraph;
@@ -46,7 +60,7 @@ namespace dg = dynamicgraph;
 /* --- CLASS ----------------------------------------------------------- */
 /* --------------------------------------------------------------------- */
 
-class SOT_CORE_EXPORT ClampWorkspace
+class SOTCLAMPWORKSPACE_EXPORT ClampWorkspace
   : public dg::Entity
 {
  public: