Disable ICU package for Apple mobile builds (#107855)

Those platforms are using hybrid globalization now and don't need the package anymore.

Author: akoeplinger

src/coreclr/runtime.proj

@@ -1,8 +1,6 @@
 <Project Sdk="Microsoft.Build.NoTargets">
 
   <PropertyGroup>
-    <_IcuDir Condition="'$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)' != ''">$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)/runtimes/$(TargetOS)-$(TargetArchitecture)$(_RuntimeVariant)/native</_IcuDir>
-
     <_BuildNativeTargetOS>$(TargetOS)</_BuildNativeTargetOS>
     <_BuildNativeTargetOS Condition="'$(TargetsLinuxBionic)' == 'true'">linux-bionic</_BuildNativeTargetOS>
   </PropertyGroup>
@@ -11,10 +9,6 @@
     <ProjectReference Include="runtime-prereqs.proj" GlobalPropertiesToRemove="$(NativeBuildPartitionPropertiesToRemove)" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetsAppleMobile)' == 'true'">
-    <PackageReference Include="Microsoft.NETCore.Runtime.ICU.Transport" PrivateAssets="all" Version="$(MicrosoftNETCoreRuntimeICUTransportVersion)" GeneratePathProperty="true" />
-  </ItemGroup>
-
   <Import Project="$(RepositoryEngineeringDir)nativepgo.targets" />
 
   <Target Name="BuildRuntime"
@@ -79,10 +73,6 @@
       <_CoreClrBuildArg Condition="'$(ClrDebugSubset)' == 'true'" Include="-component debug" />
     </ItemGroup>
 
-    <ItemGroup Condition="'$(TargetsAppleMobile)' == 'true'">
-      <_CoreClrBuildArg Include="-cmakeargs -DCMAKE_ICU_DIR=&quot;$(_IcuDir)&quot;" />
-    </ItemGroup>
-
     <ItemGroup Condition="('$(TargetsAndroid)' == 'true' or '$(TargetsLinuxBionic)' == 'true') and '$(ANDROID_NDK_ROOT)' != ''">
       <_CoreClrBuildArg Include="-DCMAKE_TOOLCHAIN_FILE=$(ANDROID_NDK_ROOT)/build/cmake/android.toolchain.cmake"/>
       <_CoreClrBuildArg Include="-DANDROID_NDK=$(ANDROID_NDK_ROOT)"/>

src/native/libs/build-native.proj

@@ -16,7 +16,7 @@
     <_UsePThreads />
     <_UsePThreads Condition="'$(WasmEnableThreads)' == 'true'"> usepthreads</_UsePThreads>
 
-    <_IcuDir Condition="'$(TargetsAppleMobile)' != 'true' and '$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)' != ''">$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)/runtimes/$(TargetOS)-$(TargetArchitecture)$(_RuntimeVariant)/native</_IcuDir>
+    <_IcuDir Condition="'$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)' != ''">$(PkgMicrosoft_NETCore_Runtime_ICU_Transport)/runtimes/$(TargetOS)-$(TargetArchitecture)$(_RuntimeVariant)/native</_IcuDir>
     <_IcuDirArg Condition="'$(_IcuDir)' != ''"> icudir "$(_IcuDir)"</_IcuDirArg>
 
     <_BuildNativeArgs>$(_BuildNativeArgs)$(_IcuDirArg)$(_UsePThreads)</_BuildNativeArgs>
@@ -32,7 +32,7 @@
     <_BuildNativeEnvironmentVariables>$(_BuildNativeEnvironmentVariables);WASI_SDK_PATH=$(WASI_SDK_PATH)</_BuildNativeEnvironmentVariables>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetsAppleMobile)' == 'true' or '$(TargetOS)' == 'browser' or '$(TargetOS)' == 'wasi'">
+  <ItemGroup Condition="'$(TargetOS)' == 'browser' or '$(TargetOS)' == 'wasi'">
     <PackageReference Include="Microsoft.NETCore.Runtime.ICU.Transport" PrivateAssets="all" Version="$(MicrosoftNETCoreRuntimeICUTransportVersion)" GeneratePathProperty="true" />
   </ItemGroup>
 
@@ -61,7 +61,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <_IcuArtifacts Condition="'$(_IcuDir)' != '' and '$(TargetsAppleMobile)' != 'true'"
+      <_IcuArtifacts Condition="'$(_IcuDir)' != ''"
                      Include="$(_IcuDir)/lib/libicuuc.a;
                               $(_IcuDir)/lib/libicui18n.a;
                               $(_IcuDir)/lib/libicudata.a;