Removed old iridrivers directories

Finddynamixel_pan_tilt.cmake

 #edit the following line to add the librarie's header files
-FIND_PATH(dynamixel_pan_tilt_INCLUDE_DIRS dynamixel_pan_tilt.h dynamixel_pan_tilt_exceptions.h /usr/local/include/iridrivers /usr/local/include/iri/dynamixel_pan_tilt /usr/include/iri/dynamixel_pan_tilt)
+FIND_PATH(dynamixel_pan_tilt_INCLUDE_DIRS dynamixel_pan_tilt.h dynamixel_pan_tilt_exceptions.h /usr/local/include/iri/dynamixel_pan_tilt /usr/include/iri/dynamixel_pan_tilt)
 
 FIND_LIBRARY(dynamixel_pan_tilt_LIBRARIES
     NAMES dynamixel_pan_tilt
-    PATHS /usr/local/lib/iridrivers /usr/local/lib/iri/dynamixel_pan_tilt /usr/lib/iri/dynamixel_pan_tilt) 
+    PATHS /usr/local/lib/iri/dynamixel_pan_tilt /usr/lib/iri/dynamixel_pan_tilt) 
 
 SET(dynamixel_pan_tilt_INCLUDE_DIR ${dynamixel_pan_tilt_INCLUDE_DIRS})
 SET(dynamixel_pan_tilt_LIBRARY    ${dynamixel_pan_tilt_LIBRARIES})