Temporarily disable source_map_operators_test while fixing underlying error.

pkg/compiler/lib/src/ssa/builder.dart

Index: pkg/compiler/lib/src/ssa/builder.dart
diff --git a/pkg/compiler/lib/src/ssa/builder.dart b/pkg/compiler/lib/src/ssa/builder.dart
index 0f5199287baf9082ade8007d022b1fbaabd75e3d..e3cb4b8d7da65c624767601c97c750cc201c07c7 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -493,7 +493,9 @@ class LocalsHandler {
         }
       }
       HInstruction value = directLocals[local];
-      if (sourceInformation != null) {
+      if (false && sourceInformation != null) {
+        // TODO(johnniwinther): Enable this again when boolean conversions of
+        // boolean type conversions are handled correctly.
         value = new HRef(value, sourceInformation);
         builder.add(value);
       }