[libclang] Implicit objc methods are skipped, no need to check isSynthesized.
[libclang] Implicit objc methods are skipped, no need to check isSynthesized.

Plus, isSynthesized returning true does not mean that there is not a user-declared method declaration.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@137858 91177308-0d34-0410-b5e6-96231b3b80d8

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