Remove SchemaInterface::TYPE_JSONB constant

[Tigrov]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	✔️
Fixed issues	#767

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.56%. Comparing base (c702494) to head (c67e83c).

❗ Current head c67e83c differs from pull request most recent head bdb544a. Consider uploading reports for the commit bdb544a to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #838   +/-   ##
=========================================
  Coverage     99.56%   99.56%           
  Complexity     1321     1321           
=========================================
  Files            64       64           
  Lines          3245     3245           
=========================================
  Hits           3231     3231           
  Misses           14       14           

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