removed more obsolete versionadded directives

Author: OskarStark

bundles/extension.rst

@@ -139,10 +139,6 @@ Symfony creates a big ``classes.php`` file in the cache directory to aggregate
 the contents of the PHP classes that are used in every request. This reduces the
 I/O operations and increases the application performance.
 
-.. versionadded:: 3.2
-
-   The ``addAnnotatedClassesToCompile()`` method was added in Symfony 3.2.
-
 Your bundles can also add their own classes into this file thanks to the
 ``addClassesToCompile()`` and ``addAnnotatedClassesToCompile()`` methods (both
 work in the same way, but the second one is for classes that contain PHP
@@ -176,10 +172,6 @@ class names::
     If some class extends from other classes, all its parents are automatically
     included in the list of classes to compile.
 
-.. versionadded:: 3.2
-
-   The option to add classes to compile using patterns was introduced in Symfony 3.2.
-
 The classes to compile can also be added using file path patterns::
 
     // ...

configuration/external_parameters.rst

@@ -12,10 +12,6 @@ example. The flexibility of the Symfony service container allows you to do this.
 Environment Variables
 ---------------------
 
-.. versionadded:: 3.2
-
-    ``env()`` parameters were introduced in Symfony 3.2.
-
 You can reference environment variables by using special parameters named after
 the variables you want to use enclosed between ``env()``. Their actual values
 will be resolved at runtime (once per request), so that dumped containers can be
@@ -122,13 +118,6 @@ of the following:
 
 .. tip::
 
-    .. versionadded:: 3.3
-
-        The support of the special ``SYMFONY__`` environment variables was
-        deprecated in Symfony 3.3 and it will be removed in 4.0. Instead of
-        using those variables, define regular environment variables and get
-        their values using the ``%env(...)%`` syntax in your config files.
-
     You can also define the default value of any existing parameters using
     special environment variables named after their corresponding parameter
     prefixed with ``SYMFONY__`` after replacing dots by double underscores

form/unit_testing.rst

@@ -218,8 +218,3 @@ guessers using the :method:`Symfony\\Component\\Form\\Test\\FormIntegrationTestC
 :method:`Symfony\\Component\\Form\\Test\\FormIntegrationTestCase::getTypeExtensions`
 and :method:`Symfony\\Component\\Form\\Test\\FormIntegrationTestCase::getTypeGuessers`
 methods.
-
-.. versionadded:: 3.3
-
-    The ``getTypes()``, ``getTypeExtensions()`` and ``getTypeGuessers()``
-    methods were introduced in Symfony 3.3.

reference/forms/types/number.rst

@@ -44,11 +44,6 @@ Field Options
 scale
 ~~~~~
 
-.. versionadded:: 2.7
-
-    The ``scale`` option was introduced in Symfony 2.7. Prior to Symfony 2.7,
-    it was known as ``precision``.
-
 **type**: ``integer`` **default**: Locale-specific (usually around ``3``)
 
 This specifies how many decimals will be allowed until the field rounds