Do not run clang-tidy with fortify tests.

* When clang-tidy is called, its checks
  gave different diagnostic messages.

Bug: 178534530
Test: mm with WITH_TIDY=1
Change-Id: I5eec8239d5531f88caefca3c4032f9764deb9e09
diff --git a/tests/Android.bp b/tests/Android.bp
index 678eae8..a6a930e 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -559,6 +559,7 @@
         "-U_FORTIFY_SOURCE",
     ],
     srcs: ["fortify_test_main.cpp"],
+    tidy: false,
     target: {
         host: {
             clang_cflags: ["-D__clang__"],
@@ -597,6 +598,7 @@
         "-D__clang_analyzer__",
     ],
     srcs: ["clang_fortify_tests.cpp"],
+    tidy: false,
 }
 
 cc_test_library {
@@ -638,6 +640,7 @@
         "-U_FORTIFY_SOURCE",
     ],
     srcs: ["clang_fortify_tests.cpp"],
+    tidy: false,
     target: {
         host: {
             clang_cflags: ["-D__clang__"],