message: [gitignore] remove ide-related gitignore files
diff: # Rust specific ignores
  +# Please follow https://help.github.com/en/articles/ignoring-files to create a global
  +# .gitignore file locally for IDE/Emacs/Vim generated files.
  /target
  **/*.rs.bk
  # Cargo.lock is needed for deterministic testing and repeatable builds.
  @@ -14,12 +16,6 @@ Cargo.lock
  **/proto/*/*.rs
  !**/proto/*/mod.rs
  -# IDE
  -.idea
  -.idea/*
  -*.iml
  -.vscode
  -
  # Ignore wallet mnemonic files used for deterministic key derivation
  *.mnemonic
  