remove Equivalent

Author: cherylEnkidu

Firestore/Swift/Source/ExpressionImplementation.swift

@@ -373,17 +373,6 @@ extension Expression {
   func stringReplace(_ find: Expression, with replace: Expression) -> FunctionExpression {
     return FunctionExpression(functionName: "string_replace", args: [self, find, replace])
   }
-
-  // MARK: Equivalence Operations
-
-  /// Creates a `BooleanExpr` that returns `true` if this expression is equivalent
-  /// to the given value.
-  ///
-  /// - Parameter other: The value to compare against.
-  /// - Returns: A `BooleanExpr` that can be used in `where` clauses.
-  func equivalent(_ other: Sendable) -> BooleanExpression {
-    return BooleanExpression(functionName: "equivalent", args: [self, Helper.sendableToExpr(other)])
-  }
 }
 
 public extension Expression {

Firestore/Swift/Tests/Integration/PipelineTests.swift

@@ -1700,25 +1700,6 @@ class PipelineIntegrationTests: FSTIntegrationTestCase {
     TestHelper.compare(snapshot: snapshot, expected: expectedResults, enforceOrder: true)
   }
 
-//  func testEquivalentWorks() async throws {
-//    let collRef = collectionRef(withDocuments: [
-//      "doc1": ["value": 1, "value2": 1],
-//      "doc2": ["value": 1, "value2": 2],
-//      "doc3": ["value": NSNull(), "value2": NSNull()],
-//      "doc4": ["value": NSNull(), "value2": 1],
-//      "doc5": ["value": Double.nan, "value2": Double.nan],
-//      "doc6": ["value": Double.nan, "value2": 1],
-//    ])
-//    let db = collRef.firestore
-//
-//    let pipeline = db.pipeline()
-//      .collection(collRef.path)
-//      .where(Field("value").equivalent(Field("value2")))
-//    let snapshot = try await pipeline.execute()
-//
-//    XCTAssertEqual(snapshot.results.count, 3)
-//  }
-
   func testInWorks() async throws {
     let collRef = collectionRef(withDocuments: bookDocs)
     let db = collRef.firestore