sw/vec_iree: Temporarily disable conv1x1_test_emitc_vmvx

Until upstream LLVM issue is resolved.

BUG: 304339109
Change-Id: Ifdc75caaad551f592b186d8bf9e2409d5b597aed
diff --git a/samples/microbenchmarks/CMakeLists.txt b/samples/microbenchmarks/CMakeLists.txt
index afa8aa5..6c95e1d 100644
--- a/samples/microbenchmarks/CMakeLists.txt
+++ b/samples/microbenchmarks/CMakeLists.txt
@@ -43,7 +43,8 @@
 )
 
 # Do not compile following models for Kelvin
-if (${BUILD_WITH_KELVIN})
+# TODO(b/304339109): Temporarily disable the following target until LLVM issue is resolved
+if (true)
   return()
 endif()