code: def remove_first_axis(batch):
      for k in batch.keys():
          assert batch[k].shape[0] == 1
          batch[k] = batch[k][0]
      return batch
  
imports: import os
  import random
  import numpy
  import open3d
  import torch
  import pytorch3d
  import matplotlib.pyplot
  import matplotlib
  from scipy import ndimage
  from tqdm import tqdm
  from models.smpl import SMPL, vertices2joints
label_desc: Use image node_id 7 for calling a global function with example usage: remove_first_axis(batch) and returns: batch