update ios platform BUILD file

PiperOrigin-RevId: 408213858

cpp/platform/impl/ios/BUILD

@@ -40,7 +40,6 @@ objc_library(
         "Source/Internal/GNCUtils.h",
     ],
     deps = [
-        "//base",
         "//absl/functional:bind_front",
         "//core",
         "//core:core_types",

cpp/platform/impl/ios/Source/Mediums/BUILD

@@ -37,7 +37,6 @@ objc_library(
     ],
     deps = [
         ":ObjCProtos",
-        "//base",
         "//absl/numeric:int128",
         "//platform/impl/ios/Source/Shared",
         "//third_party/objective_c/google_toolbox_for_mac:GTM_Logger",

cpp/platform/impl/ios/Tests/BUILD

@@ -28,7 +28,6 @@ objc_library(
         "Platform/GNCSingleThreadExecutorTest.mm",
     ],
     deps = [
-        "//base",
         "//platform/impl/ios:Connections",
     ],
 )