Add missing remove_interceptor API to the Map

[mdumandag]

Also, added a test for the add_interceptor method.

Protocol PR: hazelcast/hazelcast-client-protocol#399

[codecov-commenter]

Codecov Report

Merging #481 (d2ffcbf) into master (e9dfb0a) will decrease coverage by 0.23%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #481      +/-   ##
==========================================
- Coverage   95.16%   94.93%   -0.24%     
==========================================
  Files         345      346       +1     
  Lines       17711    17730      +19     
==========================================
- Hits        16855    16832      -23     
- Misses        856      898      +42     

Impacted Files	Coverage Δ
...ast/protocol/codec/map_remove_interceptor_codec.py	100.00% <100.00%> (ø)
hazelcast/proxy/map.py	89.77% <100.00%> (+0.59%)	⬆️
...otocol/codec/client_authentication_custom_codec.py	50.00% <0.00%> (-23.81%)	⬇️
hazelcast/reactor.py	81.79% <0.00%> (-7.53%)	⬇️
hazelcast/connection.py	91.88% <0.00%> (-1.42%)	⬇️
hazelcast/invocation.py	94.63% <0.00%> (-0.77%)	⬇️
...elcast/protocol/codec/map_add_interceptor_codec.py	100.00% <0.00%> (+42.85%)	⬆️

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[yuce]

Just two trivial comments.