code: def process_tex(lines):
      """
      Remove unnecessary section titles from the LaTeX file.
  
      """
      new_lines = []
      for line in lines:
          if (
              line.startswith(r"\section{numpy.")
              or line.startswith(r"\subsection{numpy.")
              or line.startswith(r"\subsubsection{numpy.")
              or line.startswith(r"\paragraph{numpy.")
              or line.startswith(r"\subparagraph{numpy.")
          ):
              pass  # skip!
          else:
              new_lines.append(line)
      return new_lines
  
label_desc: Use image node_id 3 for calling a global function with example usage: process_tex(lines) and returns: new_lines