Revert "Let SupportsDunderLT return SupportsBool instead of `bool… (#14373)

Revert "Let `SupportsDunderLT` return `SupportsBool` instead of `bool`. (#12939)"

This reverts commit aed8025.

Author: srittau

stdlib/_typeshed/__init__.pyi

@@ -82,22 +82,19 @@ class SupportsNext(Protocol[_T_co]):
 class SupportsAnext(Protocol[_T_co]):
     def __anext__(self) -> Awaitable[_T_co]: ...
 
-class SupportsBool(Protocol):
-    def __bool__(self) -> bool: ...
-
 # Comparison protocols
 
 class SupportsDunderLT(Protocol[_T_contra]):
-    def __lt__(self, other: _T_contra, /) -> SupportsBool: ...
+    def __lt__(self, other: _T_contra, /) -> bool: ...
 
 class SupportsDunderGT(Protocol[_T_contra]):
-    def __gt__(self, other: _T_contra, /) -> SupportsBool: ...
+    def __gt__(self, other: _T_contra, /) -> bool: ...
 
 class SupportsDunderLE(Protocol[_T_contra]):
-    def __le__(self, other: _T_contra, /) -> SupportsBool: ...
+    def __le__(self, other: _T_contra, /) -> bool: ...
 
 class SupportsDunderGE(Protocol[_T_contra]):
-    def __ge__(self, other: _T_contra, /) -> SupportsBool: ...
+    def __ge__(self, other: _T_contra, /) -> bool: ...
 
 class SupportsAllComparisons(
     SupportsDunderLT[Any], SupportsDunderGT[Any], SupportsDunderLE[Any], SupportsDunderGE[Any], Protocol