See if setting a resource dir symlink is no longer needed on the CI

Author: finagolfin

.github/workflows/sdks.yml

@@ -142,6 +142,7 @@ jobs:
             fi
             TESTING_BUILD="--swift-testing --install-swift-testing"
             git apply swift-android-ci-except-release.patch swift-android-foundation-except-release.patch
+            unset ANDROID_NDK_ROOT
           fi
 
           perl -pi -e 's%String\(cString: getpass%\"fake\" //%' swiftpm/Sources/PackageRegistryCommand/PackageRegistryCommand+Auth.swift

swift-android-foundation-except-release.patch

@@ -1,15 +1,3 @@
-diff --git a/swift/utils/build-script-impl b/swift/utils/build-script-impl
-index 16e05052609..7ab8cebfab8 100755
---- a/swift/utils/build-script-impl
-+++ b/swift/utils/build-script-impl
-@@ -2622,6 +2622,7 @@ for host in "${ALL_HOSTS[@]}"; do
-                     echo "Cleaning the libdispatch build directory"
-                     call rm -rf "${LIBDISPATCH_BUILD_DIR}"
-                   fi
-+                  call ln -sf "${SWIFT_BUILD_PATH}/lib/swift" "${ANDROID_NDK}/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib"
- 
-                   cmake_options=(
-                     -DENABLE_SWIFT=YES
 diff --git a/swift/utils/swift_build_support/swift_build_support/products/swift_testing.py b/swift/utils/swift_build_support/swift_build_support/products/swift_testing.py
 index 324d1a77eea..e88601a8701 100644
 --- a/swift/utils/swift_build_support/swift_build_support/products/swift_testing.py