waf: fix lib link check

-llibrary_name is already part of the link flags at this point and
libname is "liblibrary_name" so it adds -lliblibrary_name instead which
is wrong

Tools/ardupilotwaf/cxx_checks.py

@@ -140,7 +140,7 @@ def ap_common_checks(cfg):
         msg="Checking for HAVE_MEMRCHR",
         mandatory=False,
     )
-    
+
 @conf
 def check_librt(cfg, env):
     if cfg.env.DEST_OS == 'darwin':
@@ -186,7 +186,6 @@ def check_package(cfg, env, libname):
             fragment='''int main() { return 0; }''',
             msg='Checking link with %s' % libname,
             mandatory=False,
-            lib=libname,
             use=capsname):
         cfg.env.revert()
         return False
@@ -248,7 +247,7 @@ def check_SFML(cfg, env):
                          global_define=True):
             cfg.fatal("Missing SFML libraries - please install libsfml-dev")
             return False
-    
+
     # see if we need Graphics.hpp or Graphics.h
     if not cfg.check(compiler='cxx',
                      fragment='''#include <SFML/Graphics.hpp>\nint main() {}''', define_name="HAVE_SFML_GRAPHICS_HPP",