[iOS] Eliminate framework bitcode stripping flag (#36628)

Eliminates the `--strip-bitcode` flag from the `create_ios_framework.py`
and `create_full_ios_framework.py` scripts.

Issue: https://github.com/flutter/flutter/issues/107884
diff --git a/ci/builders/mac_ios_engine_release.json b/ci/builders/mac_ios_engine_release.json
index 38d14b1..65eb92a 100644
--- a/ci/builders/mac_ios_engine_release.json
+++ b/ci/builders/mac_ios_engine_release.json
@@ -102,7 +102,6 @@
                     "out/ios_debug_sim",
                     "--simulator-arm64-out-dir",
                     "out/ios_debug_sim_arm64",
-                    "--strip-bitcode",
                     "--dsym",
                     "--strip"
                 ],
diff --git a/sky/tools/create_full_ios_framework.py b/sky/tools/create_full_ios_framework.py
index fb3dd70..3d46fc4 100644
--- a/sky/tools/create_full_ios_framework.py
+++ b/sky/tools/create_full_ios_framework.py
@@ -41,12 +41,6 @@
   parser.add_argument('--simulator-arm64-out-dir', type=str, required=False)
   parser.add_argument('--strip', action="store_true", default=False)
   parser.add_argument('--dsym', action="store_true", default=False)
-  parser.add_argument(
-      '--strip-bitcode',
-      dest='strip_bitcode',
-      action="store_true",
-      default=False
-  )
 
   args = parser.parse_args()
 
@@ -201,11 +195,6 @@
 
 
 def process_framework(args, dst, framework, framework_binary):
-  if args.strip_bitcode:
-    subprocess.check_call([
-        'xcrun', 'bitcode_strip', '-r', framework_binary, '-o', framework_binary
-    ])
-
   if args.dsym:
     dsym_out = os.path.splitext(framework)[0] + '.dSYM'
     subprocess.check_call([DSYMUTIL, '-o', dsym_out, framework_binary])
diff --git a/sky/tools/create_ios_framework.py b/sky/tools/create_ios_framework.py
index 201fe63..e20c010 100755
--- a/sky/tools/create_ios_framework.py
+++ b/sky/tools/create_ios_framework.py
@@ -33,12 +33,6 @@
   parser.add_argument('--simulator-arm64-out-dir', type=str, required=False)
   parser.add_argument('--strip', action="store_true", default=False)
   parser.add_argument('--dsym', action="store_true", default=False)
-  parser.add_argument(
-      '--strip-bitcode',
-      dest='strip_bitcode',
-      action="store_true",
-      default=False
-  )
 
   args = parser.parse_args()
 
@@ -113,11 +107,6 @@
 
 
 def process_framework(args, framework, framework_binary):
-  if args.strip_bitcode:
-    subprocess.check_call([
-        'xcrun', 'bitcode_strip', '-r', framework_binary, '-o', framework_binary
-    ])
-
   if args.dsym:
     dsym_out = os.path.splitext(framework)[0] + '.dSYM'
     subprocess.check_call([DSYMUTIL, '-o', dsym_out, framework_binary])