code/source: remove unused method Source.isparseable()

src/_pytest/_code/source.py

@@ -132,21 +132,6 @@ class Source:
         newsource.lines[:] = deindent(self.lines)
         return newsource
 
-    def isparseable(self, deindent: bool = True) -> bool:
-        """ return True if source is parseable, heuristically
-            deindenting it by default.
-        """
-        if deindent:
-            source = str(self.deindent())
-        else:
-            source = str(self)
-        try:
-            ast.parse(source)
-        except (SyntaxError, ValueError, TypeError):
-            return False
-        else:
-            return True
-
     def __str__(self) -> str:
         return "\n".join(self.lines)
 

testing/code/test_source.py

@@ -125,15 +125,6 @@ def test_syntaxerror_rerepresentation() -> None:
     assert ex.value.text.rstrip("\n") == "xyz xyz"
 
 
-def test_isparseable() -> None:
-    assert Source("hello").isparseable()
-    assert Source("if 1:\n  pass").isparseable()
-    assert Source(" \nif 1:\n  pass").isparseable()
-    assert not Source("if 1:\n").isparseable()
-    assert not Source(" \nif 1:\npass").isparseable()
-    assert not Source(chr(0)).isparseable()
-
-
 class TestAccesses:
     def setup_class(self) -> None:
         self.source = Source(
@@ -147,7 +138,6 @@ class TestAccesses:
 
     def test_getrange(self) -> None:
         x = self.source[0:2]
-        assert x.isparseable()
         assert len(x.lines) == 2
         assert str(x) == "def f(x):\n    pass"