Revert "Update --local-engine to account for changed host architecture of...

Revert "Update --local-engine to account for changed host architecture of 32-bit Android debug builds. (#11251)" (#11259)

This reverts commit 3f514fcf.

bin/internal/engine.version

-7480e32854606e554ae37f8bd241c050bdc565c4
+f56da86f9807a7d4c924cdb5a28d77baad0537b1

packages/flutter_tools/lib/src/artifacts.dart

@@ -212,7 +212,7 @@ class LocalEngineArtifacts extends Artifacts {
 
   String _genSnapshotPath(TargetPlatform platform, BuildMode mode) {
     String clang;
-    if (platform == TargetPlatform.ios) {
+    if (platform == TargetPlatform.ios || mode == BuildMode.debug) {
       clang = 'clang_x64';
     } else {
       clang = getCurrentHostPlatform() == HostPlatform.darwin_x64 ? 'clang_i386' : 'clang_x86';