diff --git a/SwiftGit2/CommitIterator.swift b/SwiftGit2/CommitIterator.swift
index 0b27399..0974da7 100644
--- a/SwiftGit2/CommitIterator.swift
+++ b/SwiftGit2/CommitIterator.swift
@@ -67,76 +67,4 @@ public class CommitIterator: IteratorProtocol, Sequence {
 			return result
 		}
 	}
-
-	public func makeIterator() -> CommitIterator {
-		return self
-	}
-
-	public private(set) var underestimatedCount: Int = 0
-	public func map<T>(_ transform: (Result<Commit, NSError>) throws -> T) rethrows -> [T] {
-		var new: [T] = []
-		for item in self {
-			new += [try transform(item)]
-		}
-		return new
-	}
-
-	public func filter(_ isIncluded: (Result<Commit, NSError>) throws -> Bool) rethrows -> [Result<Commit, NSError>] {
-		var new: [Result<Commit, NSError>] = []
-		for item in self {
-			if try isIncluded(item) {
-				new += [item]
-			}
-		}
-		return new
-	}
-
-	public func forEach(_ body: (Result<Commit, NSError>) throws -> Void) rethrows {
-		for item in self {
-			try body(item)
-		}
-	}
-
-	private func notImplemented(functionName: Any) {
-		assert(false, "CommitIterator does not implement \(functionName)")
-	}
-	private init(repo: Repository) {
-		self.repo = repo
-	}
-
-	public func dropFirst(_ num: Int) -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: self.dropFirst)
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func dropLast(_ num: Int) -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: self.dropLast)
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func drop(while predicate: (Result<Commit, NSError>) throws -> Bool) rethrows -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: self.drop)
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func prefix(_ maxLength: Int) -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: "prefix(_ maxLength:")
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func prefix(while predicate: (Result<Commit, NSError>) throws -> Bool) rethrows -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: "prefix(with predicate:")
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func suffix(_ maxLength: Int) -> AnySequence<Iterator.Element> {
-		notImplemented(functionName: self.suffix)
-		return AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }
-	}
-
-	public func split(maxSplits: Int, omittingEmptySubsequences: Bool, whereSeparator isSeparator: (Result<Commit, NSError>) throws -> Bool) rethrows -> [AnySequence<Iterator.Element>] {
-		notImplemented(functionName: self.split)
-		return [AnySequence<Iterator.Element> { return CommitIterator(repo: self.repo) }]
-	}
-
 }