[analyzer] Remove unneeded helper function (it's in ASTContext.h)
[analyzer] Remove unneeded helper function (it's in ASTContext.h)

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@159244 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang