[fan_drawer_base.py] Fix FanDrawer get_status_led interface (sonic-net#175)

Fix `get_status_led()` API definition to conform to the description.

Signed-off-by: Volodymyr Boyko <volodymyrx.boiko@intel.com>

Author: vboykox

sonic_platform_base/fan_drawer_base.py

@@ -73,7 +73,7 @@ def set_status_led(self, color):
         """
         raise NotImplementedError
 
-    def get_status_led(self, color):
+    def get_status_led(self):
         """
         Gets the state of the fan drawer LED