fix(rev-list): remove unused branch parameter

Author: Andrew McKnight

Sources/GitKit/Git.swift

@@ -38,7 +38,7 @@ public final class Git: Shell {
         /// - parameter revision the name of the revision to parse. can be symbolic (`@`), human-readable (`origin/HEAD`) or a commit SHA hash
         case revParse(abbrevRef: Bool, revision: String)
 
-        case revList(branch: String, count: Bool = false, revisions: String? = nil)
+        case revList(count: Bool = false, revisions: String? = nil)
         case raw(String)
         case lsRemote(url: String, limitToHeads: Bool = false)
 
@@ -153,7 +153,7 @@ public final class Git: Shell {
                 params = [Command.config.rawValue, "--add", name, value]
             case .readConfig(let name):
                 params = [Command.config.rawValue, "--get", name]
-            case .revList(_, let count, let revisions):
+            case .revList(let count, let revisions):
                 params = [Command.revList.rawValue]
                 if count {
                     params.append("--count")