Bug 1735307 - Move "rm bootstrap.py" into bootstrap step. r=glandium,mhentges

Differential Revision: https://phabricator.services.mozilla.com/D128184

Author: arai-a

docs/setup/linux_build.rst

@@ -115,14 +115,22 @@ If you aren't modifying the Firefox backend, then then select one of the
 :ref:`Artifact Mode <Understanding Artifact Builds>` options. If you are
 building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide`.
 
+Cleanup
+~~~~~~~
+
+After finishing the bootstrap process, ``bootstrap.py`` can be removed.
+
+.. code-block:: shell
+
+    rm bootstrap.py
+
 3. Build
 --------
 
 Now that your system is bootstrapped, you should be able to build!
 
 .. code-block:: shell
 
-    rm bootstrap.py
     cd mozilla-unified
     ./mach build
     ./mach run

docs/setup/macos_build.rst

@@ -95,14 +95,22 @@ If you aren't modifying the Firefox backend, then then select one of the
 :ref:`Artifact Mode <Understanding Artifact Builds>` options. If you are
 building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide`.
 
+Cleanup
+~~~~~~~
+
+After finishing the bootstrap process, ``bootstrap.py`` can be removed.
+
+.. code-block:: shell
+
+    rm bootstrap.py
+
 3. Build
 --------
 
 Now that your system is bootstrapped, you should be able to build!
 
 .. code-block:: shell
 
-    rm bootstrap.py
     cd mozilla-unified
     ./mach build
     ./mach run

docs/setup/windows_build.rst

@@ -115,14 +115,22 @@ to Windows Defender
     If you're already missing files (you'll see them listed in ``hg status``, you can have them
     brought back by reverting your source tree: ``hg update -C``).
 
+Cleanup
+~~~~~~~
+
+After finishing the bootstrap process, ``bootstrap.py`` can be removed.
+
+.. code-block:: shell
+
+    rm c:/mozilla-source/bootstrap.py
+
 3. Build
 --------
 
 Now that your system is bootstrapped, you should be able to build!
 
 .. code-block:: shell
 
-    rm bootstrap.py
     cd mozilla-unified
     ./mach build
     ./mach run