Revert "Native libraries use mimalloc as global allocator (#1249)"

This reverts commit 93f01d0.

Author: billti

.devcontainer/devcontainer.json

@@ -1,10 +1,9 @@
 // For format details, see https://aka.ms/devcontainer.json. For config options, see the
-// README at: https://github.com/devcontainers/templates/tree/main/src/cpp
+// README at: https://github.com/devcontainers/templates/tree/main/src/rust
 {
 	"name": "qsharp",
-	"image": "mcr.microsoft.com/devcontainers/cpp",
+	"image": "mcr.microsoft.com/devcontainers/python:3",
 	"features": {
-		"ghcr.io/devcontainers/features/python:1": {},
 		"ghcr.io/devcontainers/features/node:1": {
 			"nodeGypDependencies": true,
 			"version": "lts"

.gitignore

@@ -15,5 +15,3 @@ __pycache__/
 /fuzz/artifacts
 /fuzz/coverage
 /fuzz/Cargo.lock
-.mypy_cache/
-.pytest_cache/

Cargo.lock

@@ -1,7 +1,5 @@
 [workspace]
 members = [
-    "allocator",
-    "allocator/mimalloc-sys",
     "compiler/qsc",
     "compiler/qsc_ast",
     "compiler/qsc_codegen",

Cargo.toml

@@ -23,13 +23,12 @@ Code from this repository powers the Q# development experience on <https://quant
 
 ## Building
 
-To build this repository there are dependencies that need to be installed. These are:
+To build this repository there are 4 dependencies that need to be installed. These are:
 
 - Python (<https://python.org>)
 - Rust (<https://www.rust-lang.org/tools/install>)
 - Node.js (<https://nodejs.org/>)
 - wasm-pack (<https://rustwasm.github.io/wasm-pack/installer/>)
-- cmake (<https://cmake.org/>) and a C compiler
 
 The build script will check these dependencies and their versions and fail if not met. (Or run
 `python ./prereqs.py` directly to check if the minimum required versions are installed).