input: def modify_function(func):
      """
      Modify an existing Python function to eliminate any redundancies.
      >>> modify_function('''
      ... def just_me(name):
      ...     print("Hi, my name is "+name+".")
      ...     print("I am special and nothing else matters.")
      ...     print("What about you?")
      ... ''')
      'def just_me(name):\n    print("Hi, my name is "+name+". I am special and nothing else matters.")\n    print("What about you?")'
      """
output:     import ast
      import astor
  
      class RedundancyEliminator(ast.NodeTransformer):
          def visit_Print(self, node):
              if isinstance(node.values[0], ast.BinOp) and isinstance(node.values[0].op, ast.Add):
                  new_node = ast.Print(
                      values=[ast.BinOp(
                          left=node.values[0].left,
                          op=node.values[0].op,
                          right=node.values[0].right
                      )],
                      dest=node.dest,
                      nl=node.nl
                  )
                  return new_node
              return node
  
      def eliminate_redundancies(code):
          tree = ast.parse(code)
          RedundancyEliminator().visit(tree)
          return astor.to_source(tree).strip()
  
      return eliminate_redundancies(func)