src: remove node_bob.h and node_bob-inl.h

These were added in nodejs#32379 and were
supposed to get removed in nodejs#37067.

Signed-off-by: Darshan Sen <[email protected]>

Author: RaisinTen

.github/label-pr-config.yml

@@ -32,7 +32,6 @@ subSystemLabels:
   /^src\/node_wasi/: c++, wasi
   /^src\/node_worker/: c++, worker
   /^src\/quic\/*/: c++, quic, dont-land-on-v14.x, dont-land-on-v12.x
-  /^src\/node_bob*/: c++, quic, dont-land-on-v14.x, dont-land-on-v12.x
 
   # don't label python files as c++
   /^src\/.+\.py$/: python, needs-ci