Remove "Condition" suffix from condition classes

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	✔️

Related to yiisoft/db#1006

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.54%. Comparing base (1c9760d) to head (0b7fdfa).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #379   +/-   ##
=========================================
  Coverage     98.54%   98.54%           
  Complexity      225      225           
=========================================
  Files            19       19           
  Lines           757      757           
=========================================
  Hits            746      746           
  Misses           11       11           

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