test: drop now-empty remote runner (#35343)

* test: drop the now-empty remote runner from CI

* move fixtures to spec-main

* remove remote runner

* fix stuff

* remove global-paths hack

* move ts-smoke to spec/

* fix test after merge

* rename spec-main to spec

* no need to ignore spec/node_modules twice

* simplify spec-runner a little

* no need to hash pj/yl twice

* undo lint change to verify-mksnapshot.py

* excessive ..

* update electron_woa_testing.yml

* don't search for test-results-remote.xml

it is never produced now

docs/development/README.md

@@ -54,7 +54,7 @@ See [issues](issues.md) for more information.
 Most pull requests opened against the `electron/electron` repository include
 changes to either the C/C++ code in the `shell/` folder,
 the TypeScript code in the `lib/` folder, the documentation in `docs/`,
-or tests in the `spec/` and `spec-main/` folders.
+or tests in the `spec/` folder.
 
 See [pull requests](pull-requests.md) for more information.
 

docs/development/source-code-directory-structure.md

@@ -72,8 +72,7 @@ Electron
 |       |         message loop into Chromium's message loop.
 |       └── api/ - The implementation of common APIs, and foundations of
 |                  Electron's built-in modules.
-├── spec/ - Components of Electron's test suite run in the renderer process.
-├── spec-main/ - Components of Electron's test suite run in the main process.
+├── spec/ - Components of Electron's test suite run in the main process.
 └── BUILD.gn - Building rules of Electron.
 ```
 

docs/development/testing.md

@@ -32,9 +32,6 @@ app (surprise!) that can be found in the `spec` folder. Note that it has
 its own `package.json` and that its dependencies are therefore not defined
 in the top-level `package.json`.
 
-To run only tests in a specific process, run `npm run test --runners=PROCESS`
-where `PROCESS` is one of `main` or `remote`.
-
 To run only specific tests matching a pattern, run `npm run test --
 -g=PATTERN`, replacing the `PATTERN` with a regex that matches the tests
 you would like to run. As an example: If you want to run only IPC tests, you