MySQL Bugs: #76809: Remove obsolete code from UNION processing

Bug #76809	Remove obsolete code from UNION processing
Submitted:	23 Apr 2015 14:26	Modified:	28 May 2015 15:32
Reporter:	Roy Lyseng	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: Optimizer	Severity:	S3 (Non-critical)
Version:	5.7.7	OS:	Any
Assigned to:		CPU Architecture:	Any

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Description:
After the last refactoring work in preparation and optimization, there are some unused code blocks in sql_union.cc.
This bug tracks the removal of these code blocks and some simple related refactoring.

How to repeat:
N/A

Fixed in 5.7.8. Code cleanup. No changelog entry needed.