Temporarily disable all quant models

Temporarily disable all quant models due to IREE tflite tool regression
(b/200299917)

Change-Id: Ia788ef60aaad8a097337f37bbc37ecc673e8e3b3

samples/quant_model_embedding/CMakeLists.txt

diff --git a/samples/quant_model_embedding/CMakeLists.txt b/samples/quant_model_embedding/CMakeLists.txt
index 333c243..a391b7d 100644
--- a/samples/quant_model_embedding/CMakeLists.txt
+++ b/samples/quant_model_embedding/CMakeLists.txt
@@ -3,6 +3,9 @@
 # are for RVV support.
 #-------------------------------------------------------------------------------
 
+# TODO(b/200299917): Temporarily disable quant models
+return()
+
 if(NOT ${BUILD_WITH_SPRINGBOK})
 # TODO(b/198476354): uncomment below after operator tosa.clz is supported
 #  springbok_bytecode_module(