Synthesize Equatable where possible

Author: mdiep

Sources/PackageGraph/DependencyResolver.swift

@@ -144,27 +144,6 @@ public enum VersionSetSpecifier: Hashable, CustomStringConvertible {
  return version.description
  }
  }
- 
- public static func == (_ lhs: VersionSetSpecifier, _ rhs: VersionSetSpecifier) -> Bool {
- switch (lhs, rhs) {
- case (.any, .any):
- return true
- case (.any, _):
- return false
- case (.empty, .empty):
- return true
- case (.empty, _):
- return false
- case (.range(let lhs), .range(let rhs)):
- return lhs == rhs
- case (.range, _):
- return false
- case (.exact(let lhs), .exact(let rhs)):
- return lhs == rhs
- case (.exact, _):
- return false
- }
- }
 }
 
 /// An identifier which unambiguously references a package container.
@@ -327,10 +306,6 @@ public struct PackageContainerConstraint<T: PackageContainerIdentifier>: CustomS
  public var description: String {
  return "Constraint(\(identifier), \(requirement))"
  }
-
- public static func == (lhs: PackageContainerConstraint, rhs: PackageContainerConstraint) -> Bool {
- return lhs.identifier == rhs.identifier && lhs.requirement == rhs.requirement
- }
 }
 
 /// Delegate interface for dependency resoler status.

Sources/PackageModel/ToolsVersion.swift

@@ -90,10 +90,6 @@ public struct ToolsVersion: CustomStringConvertible, Comparable {
 
  // MARK: - Comparable
 
- public static func == (lhs: ToolsVersion, rhs: ToolsVersion) -> Bool {
- return lhs._version == rhs._version
- }
-
  public static func < (lhs: ToolsVersion, rhs: ToolsVersion) -> Bool {
  return lhs._version < rhs._version
  }

Sources/Workspace/PinsStore.swift

@@ -188,9 +188,4 @@ extension PinsStore.Pin: JSONMappable, JSONSerializable, Equatable {
  "state": state,
  ])
  }
-
- public static func == (lhs: PinsStore.Pin, rhs: PinsStore.Pin) -> Bool {
- return lhs.packageRef == rhs.packageRef &&
- lhs.state == rhs.state
- }
 }