Remove obsolete Haskell E2E tests for the Erlang extension

Reviewed By: TheGeorge, alanz

Differential Revision: D84231176

fbshipit-source-id: e01b3c92c54064bd9c87bc836ba782e8bbf3dbb7

Author: robertoaloi

test_projects/README.md

@@ -11,5 +11,3 @@ From this directory, you can manually test:
 ```
 
 Automated tests live in crates/elp/bin/main.rs
-
-See also //whatsapp/elp_test/README.md for additonal end-to-end LSP tests.

test_projects/end_to_end/definitions/README.md

@@ -1,8 +1 @@
 Dummy modules to exercise "goto definition".
-
-Tests themselves live in `//whatsapp/elp_test/` repo.
-To run them against local elp changes, you can do:
-```
-% ./meta/cargo.sh build --release --target-dir ~/elp-out/
-% buck test @mode/dev //whatsapp/elp_test/test:test -- definition --env ELP_PATH_FOR_LSP_TEST=$HOME/elp-out/release/elp
-```

test_projects/end_to_end/hover/README.md

@@ -1,8 +1 @@
 Dummy modules to exercise "documentation tooltip (edoc) on hover".
-
-Tests themselves live in `//whatsapp/elp_test/` repo.
-To run them against local elp changes, you can do:
-```
-% ./meta/cargo.sh build --release --target-dir ~/elp-out/
-% buck test @mode/dev //whatsapp/elp_test/test:test -- hover --env ELP_PATH_FOR_LSP_TEST=$HOME/elp-out/release/elp
-```

test_projects/end_to_end/single_errors/README.md

@@ -1,2 +1 @@
 One error per module for simple and robust diagnostic tests.
-Some of those modules are checked in //whatsapp/elp_test.