fix: Grounding SAM dependencies (#622)

Author: makseq

label_studio_ml/examples/grounding_sam/requirements.txt

@@ -5,7 +5,5 @@ mobile-sam @ git+https://github.com/ChaoningZhang/MobileSAM.git
 # torchvision -- inherited from GroundingDINO repo
 # opencv-python -- inherited from GroundingDINO repo
 segment-anything==1.0
-# replace converter with sdk
-label_studio_converter==0.0.58
 olefile==0.47
-# networkx==2.8.8
+# networkx==2.8.8