Revert "Remove unused variable from pqMultiBlockInspectorPanel"

This reverts commit 0bf3865f426ccae289ac87cdf97aa1ae6b113f28.

Change-Id: I89f7968980df6002aff3b8d71557e1e49816c5a0
Merge topic 'composite-data-display-attributes' into next

974abb7 Revert "Remove unused variable from pqMultiBlockInspectorPanel"