[fuchsia_system_metrics] Remove memory metric. Migrated to memory project.

Wait until this CL is landed:
https://fuchsia-review.googlesource.com/c/fuchsia/+/351355/

Bug: 40088

Change-Id: I3cb99a70bbad4785650664b27a1a358dc369fbc2
1 file changed
tree: 8464c52c8a4c805edb210288dd74db65cc61250a
  1. .gitignore
  2. BUILD.gn
  3. OWNERS
  4. check.py
  5. cobalt_internal/
  6. fuchsia/
  7. projects.yaml