Revert^2 Verify InMemoryDexClassLoader classes in a background thread

When dex bytecode is loaded using InMemoryDexClassLoader, automatically
spawn a background thread which performs bytecode verification on every
class.

This reverts commit b4bb63aa4be80722643611fc931976b3544f14b5. This CL
fixes a previous issue where runtime threads are not allowed to load
classes in debuggable mode.

Bug: 72131483
Change-Id: Icdeb5be2b33ef55675e3a23886e71ce3b4b02f43
Test: art/tools/run-libcore-tests.sh
Test: art/test.py -b -r -t 692
diff --git a/test/knownfailures.json b/test/knownfailures.json
index dc8acd7..34de414 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -559,6 +559,7 @@
             "674-hiddenapi",
             "690-hiddenapi-same-name-methods",
             "691-hiddenapi-proxy",
+            "692-vdex-inmem-loader",
             "944-transform-classloaders",
             "999-redefine-hiddenapi"
         ],
@@ -1094,6 +1095,7 @@
                   "688-shared-library",
                   "690-hiddenapi-same-name-methods",
                   "691-hiddenapi-proxy",
+                  "692-vdex-inmem-loader",
                   "999-redefine-hiddenapi",
                   "1000-non-moving-space-stress",
                   "1001-app-image-regions",