remove appveyor specific code paths (denoland#3071)

core/build.rs

@@ -51,8 +51,6 @@ mod gn {
  // Tell Cargo when to re-run this file. We do this first, so these directives
  // can take effect even if something goes wrong later in the build process.
  println!("cargo:rerun-if-env-changed=DENO_BUILD_PATH");
- // TODO: this is obviously not appropriate here.
- println!("cargo:rerun-if-env-changed=APPVEYOR_REPO_COMMIT");
 
  // This helps Rust source files locate the snapshot, source map etc.
  println!("cargo:rustc-env=GN_OUT_DIR={}", gn_out_dir);

tools/util.py

@@ -236,9 +236,6 @@ def parse_exit_code(s):
 def enable_ansi_colors():
  if os.name != 'nt':
  return True # On non-windows platforms this just works.
- elif "CI" in os.environ:
- return True # Ansi escape codes work out of the box on Appveyor.
-
  return enable_ansi_colors_win10()