Remove unused BackendInvalid

Author: abravalheri

docs/pyproject_hooks.rst

@@ -39,7 +39,6 @@ Exceptions
 
 Each exception has public attributes with the same name as their constructors.
 
-.. autoexception:: pyproject_hooks.BackendInvalid
 .. autoexception:: pyproject_hooks.BackendUnavailable
 .. autoexception:: pyproject_hooks.HookMissing
 .. autoexception:: pyproject_hooks.UnsupportedOperation

src/pyproject_hooks/__init__.py

@@ -2,7 +2,6 @@
 """
 
 from ._impl import (
-    BackendInvalid,
     BackendUnavailable,
     BuildBackendHookCaller,
     HookMissing,
@@ -14,7 +13,6 @@
 __version__ = "1.0.0"
 __all__ = [
     "BackendUnavailable",
-    "BackendInvalid",
     "HookMissing",
     "UnsupportedOperation",
     "default_subprocess_runner",

src/pyproject_hooks/_impl.py

@@ -31,22 +31,6 @@ def __init__(self, traceback, message=None, backend_name=None, backend_path=None
         super().__init__(message or "Error while importing backend")
 
 
-class BackendInvalid(Exception):
-    """Will be raised if the backend is invalid.
-
-    .. deprecated:: 1.1.0
-        ``pyproject_hooks`` no longer produces ``BackendInvalid`` exceptions.
-        Consider using ``BackendUnavailable`` to handle situations that
-        previously would raise ``BackendInvalid``.
-        Future versions of the library may remove this class.
-    """
-
-    def __init__(self, backend_name, backend_path, message):
-        super().__init__(message)
-        self.backend_name = backend_name
-        self.backend_path = backend_path
-
-
 class HookMissing(Exception):
     """Will be raised on missing hooks (if a fallback can't be used)."""