Fix location of desugar_jdk_libs.json

Bug: 145393922
Change-Id: Ib90176ad4b6f2091cdb64f0383687b303ce827ea
diff --git a/tools/utils.py b/tools/utils.py
index 3178d16..51c5a12 100644
--- a/tools/utils.py
+++ b/tools/utils.py
@@ -54,7 +54,7 @@
 LIBRARY_DESUGAR_CONVERSIONS_ZIP = os.path.join(LIBS, 'library_desugar_conversions.zip')
 
 DESUGAR_CONFIGURATION = os.path.join(
-      SRC_ROOT, 'library_desugar', 'desugar_jdk_libs.json')
+      'src', 'library_desugar', 'desugar_jdk_libs.json')
 DESUGAR_CONFIGURATION_MAVEN_ZIP = os.path.join(
   LIBS, 'desugar_jdk_libs_configuration.zip')
 GENERATED_LICENSE = os.path.join(GENERATED_LICENSE_DIR, 'LICENSE')