Remove outdated arm64_armv7 check (#142737)

CI is running Xcode 15, remove outdated arm64_armv7 framework checks.

dev/devicelab/bin/tasks/build_ios_framework_module_test.dart

diff --git a/dev/devicelab/bin/tasks/build_ios_framework_module_test.dart b/dev/devicelab/bin/tasks/build_ios_framework_module_test.dart
index eb433c4..ca5fbe6 100644
--- a/dev/devicelab/bin/tasks/build_ios_framework_module_test.dart
+++ b/dev/devicelab/bin/tasks/build_ios_framework_module_test.dart
@@ -278,7 +278,6 @@
       throw TaskResult.failure('$pluginFrameworkPath does not link on Flutter');
     }
 
-    // TODO(jmagman): Remove ios-arm64_armv7 checks when CI is updated to Xcode 14.
     final String transitiveDependencyFrameworkPath = path.join(
       outputPath,
       mode,
@@ -288,23 +287,11 @@
       'Reachability',
     );
 
-    final String armv7TransitiveDependencyFrameworkPath = path.join(
-      outputPath,
-      mode,
-      'Reachability.xcframework',
-      'ios-arm64_armv7',
-      'Reachability.framework',
-      'Reachability',
-    );
-
-    final bool transitiveDependencyExists = exists(File(transitiveDependencyFrameworkPath));
-    final bool armv7TransitiveDependencyExists = exists(File(armv7TransitiveDependencyFrameworkPath));
-    if (!transitiveDependencyExists && !armv7TransitiveDependencyExists) {
+    if (!exists(File(transitiveDependencyFrameworkPath))) {
       throw TaskResult.failure('Expected debug Flutter engine artifact binary to exist');
     }
 
-    if ((transitiveDependencyExists && await _linksOnFlutter(transitiveDependencyFrameworkPath)) ||
-        (armv7TransitiveDependencyExists && await _linksOnFlutter(armv7TransitiveDependencyFrameworkPath))) {
+    if (await _linksOnFlutter(transitiveDependencyFrameworkPath)) {
       throw TaskResult.failure(
           'Transitive dependency $transitiveDependencyFrameworkPath unexpectedly links on Flutter');
     }