Unused dependencies

[benknoble]

make build-all on 070ffc5 (doc: link to ways to enter the ☯ symbol, 2024-05-06) ends with

raco setup: --- checking package dependencies ---                  [21:15:38]
raco setup: package not installed: "vlibench"
raco setup:   dependency of: qi-sdk
raco setup: unused dependency detected
  for package: "qi-lib"
  on package:
   "macro-debugger"
raco setup: unused dependencies detected
  for package: "qi-sdk"
  on packages:
   "cover-coveralls"
   "vlibench"
   "collections-lib"
   "cover"
raco setup: unused dependency detected
  for package: "qi-doc"
  on package:
   "metapict"
raco setup: --- summary of package problems ---                    [21:15:41]
raco setup: package not installed: vlibench
make: *** [build-all] Error 1

The vlibench install is my fault (I think), but the rest seem worth fixing if they're not false positives.