test: remove stdlib unittest dependency for tests

When building without the standard library, we exclude the standard
library from the test dependencies. The unittest framework is dependency
on the standard library and cannot be built without it. Remove this
dependency in that case as well.

Author: compnerd

test/CMakeLists.txt

@@ -474,9 +474,11 @@ foreach(SDK ${SWIFT_SDKS})
         list(APPEND test_dependencies "touch-covering-tests")
       endif()
 
-      list(APPEND test_dependencies
-        "swiftStdlibCollectionUnittest-${SWIFT_SDK_${SDK}_LIB_SUBDIR}"
-        "swiftStdlibUnicodeUnittest-${SWIFT_SDK_${SDK}_LIB_SUBDIR}")
+      if(SWIFT_BUILD_STDLIB)
+        list(APPEND test_dependencies
+          "swiftStdlibCollectionUnittest-${SWIFT_SDK_${SDK}_LIB_SUBDIR}"
+          "swiftStdlibUnicodeUnittest-${SWIFT_SDK_${SDK}_LIB_SUBDIR}")
+      endif()
 
       set(validation_test_dependencies)