Bug 1462280 - Remove an invalid assert. r=tcampbell

js/src/jit-test/tests/cacheir/bug1462280.js

@@ -0,0 +1,3 @@
+for (var i = 0; i < 2; i++) {
+    evaluate("var obj = {[Symbol.iterator]: Symbol.iterator};");
+}

js/src/jit/CacheIRCompiler.cpp

@@ -703,7 +703,6 @@ CacheRegisterAllocator::assertValidState() const
             const auto& loc2 = operandLocations_[j];
             if (loc2.isUninitialized())
                 continue;
-            MOZ_ASSERT(loc1 != loc2);
             MOZ_ASSERT(!loc1.aliasesReg(loc2));
         }
     }