Fully simplify and fix mfc.sh clean (#524)

Author: AiredaleDev

mfc.sh

@@ -36,6 +36,8 @@ elif [ "$1" '==' "docker" ]; then
     shift; . "$(pwd)/toolchain/bootstrap/docker.sh"  $@; exit 0
 elif [ "$1" '==' "venv" ]; then
     shift; . "$(pwd)/toolchain/bootstrap/python.sh"  $@; return
+elif [ "$1" '==' "clean" ]; then
+    rm -rf "$(pwd)/build"; exit 0
 fi
 
 mkdir -p "$(pwd)/build"

toolchain/main.py

@@ -49,7 +49,7 @@ def __checks():
 
 def __run():
     {"test":   test.test,     "run":        run.run,          "build":      build.build,
-     "clean":  build.clean,   "bench":      bench.bench,      "count":      count.count,
+     "bench":      bench.bench,      "count":      count.count,
      "packer": packer.packer, "count_diff": count.count_diff, "bench_diff": bench.diff
     }[ARG("command")]()
 

toolchain/mfc/build.py

@@ -1,7 +1,7 @@
-import os, typing, hashlib, dataclasses, shutil
+import os, typing, hashlib, dataclasses
 
 from .printer import cons
-from .common  import MFC_ROOTDIR, MFCException, system, delete_directory, create_directory, \
+from .common  import MFCException, system, delete_directory, create_directory, \
                      format_list_to_string
 from .state   import ARG, CFG
 from .run     import input
@@ -286,7 +286,3 @@ def build(targets = None, case: input.MFCInputFile = None, history: typing.Set[s
 
     if len(history) == 0:
         cons.print(no_indent=True)
-
-
-def clean():
-    shutil.rmtree(os.path.join(MFC_ROOTDIR, 'build'))