minor #8401 Remove ProgressHelper page (afurculita)

This PR was submitted for the 3.0 branch but it was merged into the 3.3 branch instead (closes #8401).

Discussion
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Remove ProgressHelper page

ProgressHelper is a feature from Symfony 2, removed in Symfony 3. So it can be removed from the docs from Symfony 3.* . This can be merged in 3.0 and after that merged with the other 3.* branches

Commits
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cf5ee0b Update index.rst
43461f8 Update redirection_map
431149c Delete progresshelper.rst

Author: weaverryan

_build/redirection_map

@@ -290,6 +290,7 @@
 /components/config/introduction /components/config
 /components/config/index /components/config
 /components/console/helpers/tablehelper /components/console/helpers/table
+/components/console/helpers/progresshelper /components/console/helpers/progressbar
 /components/console/introduction /components/console
 /components/console/index /components/console
 /components/debug/class_loader /components/debug

components/console/helpers/index.rst

@@ -11,7 +11,6 @@ The Console Helpers
     formatterhelper
     processhelper
     progressbar
-    progresshelper
     questionhelper
     table
     debug_formatter