Remove DENO_BUILD_MODE and DENO_BUILD_PATH (#4431)

* Remove DENO_BUILD_MODE and DENO_BUILD_PATH

Also remove outdated docs related to ninja/gn.

* fix

* remove parameter to build_mode()

* remove arg parsing from benchmark.py

3 files changed, 8 insertions, 20 deletions

diff --git a/tools/benchmark.py b/tools/benchmark.py
index c29ca3e8c..031da263b 100755
--- a/tools/benchmark.py
+++ b/tools/benchmark.py
@@ -223,15 +223,8 @@ def bundle_benchmark(deno_exe):
     return sizes
 
 
-def main(argv):
-    if len(argv) == 2:
-        build_dir = sys.argv[1]
-    elif len(argv) == 1:
-        build_dir = build_path()
-    else:
-        print "Usage: tools/benchmark.py [build_dir]"
-        sys.exit(1)
-
+def main():
+    build_dir = build_path()
     sha1 = run_output(["git", "rev-parse", "HEAD"],
                       exit_on_fail=True).out.strip()
     http_server.spawn()
@@ -271,4 +264,4 @@ def main(argv):
 
 
 if __name__ == '__main__':
-    main(sys.argv)
+    main()
diff --git a/tools/target_test.py b/tools/target_test.py
index 2df09f9eb..192f4183a 100644
--- a/tools/target_test.py
+++ b/tools/target_test.py
@@ -2,7 +2,7 @@ import os
 import sys
 
 from test_util import DenoTestCase, run_tests
-from util import build_mode, executable_suffix, tests_path, run, run_output
+from util import executable_suffix, tests_path, run, run_output
 
 
 class TestTarget(DenoTestCase):
diff --git a/tools/util.py b/tools/util.py
index d49af71ce..c4aaa1e5b 100644
--- a/tools/util.py
+++ b/tools/util.py
@@ -204,21 +204,16 @@ def rmtree(directory):
     shutil.rmtree(directory, onerror=rm_readonly)
 
 
-def build_mode(default="debug"):
-    if "DENO_BUILD_MODE" in os.environ:
-        return os.environ["DENO_BUILD_MODE"]
-    elif "--release" in sys.argv:
+def build_mode():
+    if "--release" in sys.argv:
         return "release"
     else:
-        return default
+        return "debug"
 
 
 # E.G. "target/debug"
 def build_path():
-    if "DENO_BUILD_PATH" in os.environ:
-        return os.environ["DENO_BUILD_PATH"]
-    else:
-        return os.path.join(root_path, "target", build_mode())
+    return os.path.join(root_path, "target", build_mode())
 
 
 def parse_exit_code(s):