Remove .devcontainer/

.devcontainer/Dockerfile

@@ -1,45 +0,0 @@
-FROM ubuntu:20.04
-
-RUN apt-get update && \
-  apt-get install -y software-properties-common curl && \
-  apt-get upgrade -y
-RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 15CF4D18AF4F7421
-RUN add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ trusty main' && \
-  add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ trusty universe' && \
-  add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ xenial main' && \
-  add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ xenial universe' && \
-  add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ bionic main' && \
-  add-apt-repository -yn 'deb http://archive.ubuntu.com/ubuntu/ bionic universe' && \
-  add-apt-repository -yn 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-6.0 main' && \
-  add-apt-repository -yn 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-7 main' && \
-  add-apt-repository -yn 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-8 main' && \
-  add-apt-repository -yn 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main' && \
-  add-apt-repository -yn 'deb http://mirrors.kernel.org/ubuntu hirsute main universe'
-
-RUN apt-get update && apt-get -y install \
-  cmake \
-  ninja-build \
-  git \
-  clang-format \
-  g++-4.4 \
-  g++-4.6 \
-  g++-4.7 \
-  g++-4.8 \
-  g++-4.9 \
-  g++-5 \
-  g++-7 \
-  g++-8 \
-  g++-9 \
-  g++-10 \
-  g++-11 \
-  clang-3.5 \
-  clang-3.6 \
-  clang-3.7 \
-  clang-3.8 \
-  clang-3.9 \
-  clang-6.0 \
-  clang-7 \
-  clang-8 \
-  clang-9 \
-  clang-10 \
-  clang-11

.devcontainer/devcontainer.json

@@ -1,24 +0,0 @@
-// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
-// https://github.com/microsoft/vscode-dev-containers/tree/v0.183.0/containers/ubuntu
-{
-  "name": "Ubuntu",
-  "build": {
-    "dockerfile": "Dockerfile"
-  },
-
-  // Set *default* container specific settings.json values on container create.
-  "settings": {},
-
-  // Add the IDs of extensions you want installed when the container is created.
-  "extensions": [
-	"ms-vscode.cmake-tools",
-	"ms-vscode.cpptools",
-	"xaver.clang-format"
-],
-
-  // Use 'forwardPorts' to make a list of ports inside the container available locally.
-  // "forwardPorts": [],
-
-  // Use 'postCreateCommand' to run commands after the container is created.
-  // "postCreateCommand": "uname -a",
-}