Pyscss is obsolete with Dart CSS complier; remove all pyscss code.

third_party/pyscss/scss/tests/test_for.py

-import unittest
-
-from scss.parser import Stylesheet
-
-
-class TestSCSS( unittest.TestCase ):
-
-    def setUp(self):
-        self.parser = Stylesheet(options=dict(compress=True))
-
-    def test_for(self):
-        src = """
-            @mixin test($src:2px){
-                $width: $src + 5px;
-                width: $width;
-            }
-            .test {
-                color: blue;
-                @for $i from 1 through 4 {
-                    .span-#{$i}{
-                        @include test($i); }
-                }
-            }
-
-            @for $i from 1 through 2 {
-                .span-#{$i}{
-                    color: red; }
-            }
-        """
-        test = ".test{color:#00f}.test .span-1{width:6px}.test .span-2{width:7px}.test .span-3{width:8px}.test .span-4{width:9px}.span-1{color:#f00}.span-2{color:#f00}"
-        out = self.parser.loads(src)
-        self.assertEqual(test, out)