remove inline dump() declaration
feature #732 remove inline dump() declaration (nicolas-grekas)

This PR was merged into the 2.6-dev branch.

Discussion
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remove inline dump() declaration

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT
| Doc PR        | ~

Replaced by symfony/symfony#12411

Commits
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532ccaf remove inline dump() declaration