Remove many "versionchanged" items that didn't use the official markup,
but just some text embedded in the docs.

Also remove paragraph about implicit relative imports from tutorial.
diff --git a/Doc/tutorial/modules.rst b/Doc/tutorial/modules.rst
index 279afc8..eee989f 100644
--- a/Doc/tutorial/modules.rst
+++ b/Doc/tutorial/modules.rst
@@ -493,35 +493,24 @@
 Intra-package References
 ------------------------
 
-The submodules often need to refer to each other.  For example, the
-:mod:`surround` module might use the :mod:`echo` module.  In fact, such
-references are so common that the :keyword:`import` statement first looks in the
-containing package before looking in the standard module search path. Thus, the
-:mod:`surround` module can simply use ``import echo`` or ``from echo import
-echofilter``.  If the imported module is not found in the current package (the
-package of which the current module is a submodule), the :keyword:`import`
-statement looks for a top-level module with the given name.
-
 When packages are structured into subpackages (as with the :mod:`sound` package
 in the example), you can use absolute imports to refer to submodules of siblings
 packages.  For example, if the module :mod:`sound.filters.vocoder` needs to use
 the :mod:`echo` module in the :mod:`sound.effects` package, it can use ``from
 sound.effects import echo``.
 
-Starting with Python 2.5, in addition to the implicit relative imports described
-above, you can write explicit relative imports with the ``from module import
-name`` form of import statement. These explicit relative imports use leading
-dots to indicate the current and parent packages involved in the relative
-import. From the :mod:`surround` module for example, you might use::
+You can also write relative imports, with the ``from module import name`` form
+of import statement.  These imports use leading dots to indicate the current and
+parent packages involved in the relative import.  From the :mod:`surround`
+module for example, you might use::
 
    from . import echo
    from .. import formats
    from ..filters import equalizer
 
-Note that both explicit and implicit relative imports are based on the name of
-the current module. Since the name of the main module is always ``"__main__"``,
-modules intended for use as the main module of a Python application should
-always use absolute imports.
+Note that relative imports are based on the name of the current module.  Since
+the name of the main module is always ``"__main__"``, modules intended for use
+as the main module of a Python application must always use absolute imports.
 
 
 Packages in Multiple Directories