Change to use memory_tracker variable

peakmem_tracker was deprected and replaced by
memory_tracker [0], use that variable instead.

[0] https://review.opendev.org/#/c/434470/

Also disabled since it's not clear if we need it, and
it's currently causing a job failure because of a missing
library.

Change-Id: I4f30bba1f2e0e4565df3fa2436c0713272ee2b88
1 file changed