Fixed wrong field usage in Instrumentation::RemoveListener

Signed-off-by: Daniel Mihalyi <daniel.mihalyi@mattakis.com>

Bug: 16814665

(cherry picked from commit 6644521cfaff718a55e3602efb3b54bf19a0cd1a)

Change-Id: Ie68c70ba6ee2e0bd918717c8659c057f98e66ff7
1 file changed