gh-98040: Remove just the imp module (#98573)

Author: warsaw

Doc/c-api/import.rst

@@ -188,6 +188,8 @@ Importing Modules
    .. versionchanged:: 3.3
       Uses :func:`imp.source_from_cache()` in calculating the source path if
       only the bytecode path is provided.
+   .. versionchanged:: 3.12
+      No longer uses the removed ``imp`` module.
 
 
 .. c:function:: long PyImport_GetMagicNumber()

Doc/library/functions.rst

@@ -1987,7 +1987,6 @@ are always available.  They are listed here in alphabetical order.
 
    .. index::
       statement: import
-      module: imp
 
    .. note::