chore: cleanup lakefile (#296)

This is in preparation for considering moving to the lakefile TOML
format.

lakefile.lean

@@ -35,35 +35,8 @@ lean_lib AliveScaling {
   roots := #[`SSA.Projects.InstCombine.ScalingTest]
 }
 
---
--- lean_lib «AliveAll» {
---   roots := #[`Projects.AliveAll]
--- }
---
--- lean_lib «Tensor1D» {
---   roots := #[`Projects.Tensor1D.Tensor1D]
--- }
---
--- lean_lib «InstCombine» {
---   srcDir := "Projects/InstCombine"
---   roots := #[`InstCombinePeepholeRewrites]
---   roots := #[`InstCombinePeepholeRewrites]
--- }
---
--- -- Experiments
--- -- ===========
---
--- lean_lib «Bits» {
---   roots := #[`Experiment.Bits.Decide]
--- }
-
--- NOTE: this must be 'm'mathlib, as indicated from:
---  https://github.com/leanprover-community/mathlib4#using-mathlib4-as-a-dependency
 require mathlib from git "https://github.com/leanprover-community/mathlib4" @ "master"
-
 require Cli from git "https://github.com/mhuisi/lean4-cli.git" @ "nightly"
-
 require partax from git "https://github.com/tydeu/lean4-partax" @ "master"
-
 meta if get_config? doc = some "on" then -- dev is so not everyone has to build it
   require «doc-gen4» from git "https://github.com/leanprover/doc-gen4" @ "main"