Remove unused private member: pAccExec

Change-Id: Ie21f8a62213954da7f66c1fbe890ba9dee93cf77
Oops. We don't want to leak here.

(cherry picked from commit 51bce89dbd620d3ed59279d0ae80e5587d723bef)

Conflicts:
	sc/inc/documentlinkmgr.hxx

Change-Id: I8bcca7d743d4be7038a4c2eb1436a6470774d40d
wrong title, copied and paste from its neighbour

Change-Id: Ib9b7eb21cacdf864f309a0a853d64f299ec7b74c
(cherry picked from commit 224da5bcde2a62d375490456f717e5c2a639a802)