Ignore type checking secions, ignore coverage for test_type, added test for remove none

Author: FlavioAmurrioCS

.coveragerc

@@ -1,3 +1,7 @@
 # .coveragerc
 [report]
-show_missing = True
+show_missing = True
+exclude_lines =
+    pragma: no cover
+    if TYPE_CHECKING:
+    \.\.\.

functional/test/test_functional.py

@@ -364,6 +364,14 @@ def test_starmap(self):
         self.assertIteratorEqual(expect, result)
         self.assert_type(result)
 
+    def test_remove_none(self) -> None:
+        l = [None, -1, 0, None, 10]
+        expect = [-1, 0, 10]
+        s = self.seq(l)
+        result = s.remove_none()
+        self.assertIteratorEqual(expect, result)
+        self.assert_type(result)
+
     def test_filter(self):
         l = [0, -1, 5, 10]
         expect = [5, 10]