docs: def remove_input_link(self, process_code, input_code):
  
          """
          Remove an input (technosphere or biosphere exchange) from a process, resolving all parameter issues
          """
          # 1. find correct process
          # 2. find correct exchange
          # 3. remove that exchange
          # 4. check for parameter conflicts?
          # 4. run parameter scan to rebuild matrices?
          
          #print(process_code, input_code)
          
          process = self.database['items'][process_code]
          exchanges = process['exchanges']
          
          initial_count = len(exchanges)
          
          new_exchanges = [e for e in exchanges if e['input'] != input_code]
          
          product_code = [e['input'] for e in exchanges if e['type'] == 'production'][0]
          
          #print(product_code)
          
          param_id = [k for k, v in self.params.items() if (v['from'] == input_code[1] and v['to'] == product_code[1])][0]
          
          #print (param_id)
          
          problem_functions = self.check_param_function_use(param_id)
          
          if len(problem_functions) != 0:
              #print('the following functions have been removed:')
              for p in problem_functions:
                  self.params[p[0]]['function'] = None
                  #print(p)
  
          process['exchanges'] = new_exchanges
  
          del self.params[param_id]
  
          self.parameter_scan()
  
          return initial_count - len(new_exchanges)