Removed --unused broken option

src/command_line.py

@@ -48,7 +48,6 @@ options['p'] = [ 'preprocess'   , 'Prints a preprocessed file to standard output
 options['r'] = [ 'no_directives', 'Ignore all compiler directives !DEC$ and !DIR$', 0 ]
 options['s'] = [ 'substitute'   , 'Substitute values in do loops for generating specific optimized code.', 1 ]
 options['t'] = [ 'touch'        , 'Display which entities are touched when touching the variable given as an argument.', 1 ]
-options['u'] = [ 'unused'       , 'Print unused providers', 0 ]
 options['v'] = [ 'version'      , 'Prints version of irpf90', 0 ]
 options['z'] = [ 'openmp'       , 'Activate for OpenMP code', 0 ]
 

src/variable.py

@@ -674,8 +674,6 @@ class Variable(object):
         from variables import variables
         if '_needed_by' not in self.__dict__:
           import parsed_text
-        if command_line.do_unused and self.needed_by == []:
-          error.warn(None, "Provider %s is not used"%self.name)
         result = []
         for x in self.needed_by:
           result.append(x)