Remove usage of deprecated missing-tools bootstrap flag

[Kobzol]

This PR removes the usage of --enable-missing-tools in CI, as this config option is no longer used. It also removes dist.missing-tools config completely.

Let me know which commits should I remove (if any).

Fixes: #79249

r? @onur-ozkan

[rustbot]

This PR modifies src/bootstrap/src/core/config.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

[onur-ozkan]

We have #107830 PR which aims to close #79249 completely. Since author is inactive, I think we can cherry-pick the commit from that PR and fix the conflicts and review notes.

[rustbot]

This PR modifies config.example.toml.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

[rustbot]

Could not assign reviewer from: onur-ozkan.
User(s) onur-ozkan are either the PR author, already assigned, or on vacation, and there are no other candidates.
Use r? to specify someone else to assign.

[onur-ozkan]

Just 2 minor notes, other than that LGTM

[onur-ozkan]

@bors r+

[bors]

📌 Commit fdeb8c5 has been approved by onur-ozkan

It is now in the queue for this repository.

[bors]

⌛ Testing commit fdeb8c5 with merge 03c2a10...

[rust-log-analyzer]

The job aarch64-gnu failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

   Compiling cranelift-codegen v0.103.0
[RUSTC-TIMING] build_script_build test:false 0.878
[RUSTC-TIMING] regalloc2 test:false 5.029
[RUSTC-TIMING] gimli test:false 9.272
##[error]The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.
##[group]Clock drift check
  local time: Fri Dec 29 00:02:07 UTC 2023
  local time: Fri Dec 29 00:02:07 UTC 2023
Session terminated, killing shell... ...killed.
##[error]The operation was canceled.
Cleaning up orphan processes

[bors]

💔 Test failed - checks-actions

[onur-ozkan]

Session terminated, killing shell... ...killed.
##[error]The operation was canceled.

@bors retry

[bors]

⌛ Testing commit fdeb8c5 with merge 29abb90...

[bors]

☀️ Test successful - checks-actions
Approved by: onur-ozkan
Pushing 29abb90 to master...

[rust-timer]

Finished benchmarking commit (29abb90): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	3.3%	[3.3%, 3.3%]	1
Regressions ❌ (secondary)	3.0%	[3.0%, 3.0%]	1
Improvements ✅ (primary)	-3.4%	[-3.6%, -3.1%]	2
Improvements ✅ (secondary)	-2.2%	[-2.3%, -2.2%]	2
All ❌✅ (primary)	-1.2%	[-3.6%, 3.3%]	3

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.6%	[-0.6%, -0.6%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.6%	[-0.6%, -0.6%]	1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 671.694s -> 669.249s (-0.36%)
Artifact size: 312.04 MiB -> 312.02 MiB (-0.01%)