Global clang-tidy is dead, and not coming back.

Change-Id: Ia24568e9908ac88fb72f45c0b2e7f50101a6fb00
diff --git a/libc/Android.bp b/libc/Android.bp
index d914983..c214198 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -104,8 +104,6 @@
     },
 
     apex_available: ["com.android.runtime"],
-
-    tidy_disabled_srcs: ["upstream-*/**/*.c"],
 }
 
 // Workaround for b/24465209.
diff --git a/libc/malloc_debug/Android.bp b/libc/malloc_debug/Android.bp
index 5d61801..add6ba9 100644
--- a/libc/malloc_debug/Android.bp
+++ b/libc/malloc_debug/Android.bp
@@ -182,11 +182,6 @@
         "bionic_libc_platform_headers",
     ],
 
-    // The clang-analyzer-unix.Malloc and other warnings in these
-    // unit tests are either false positive or in
-    // negative tests that can be ignored.
-    tidy: false,
-
     srcs: [
         "tests/malloc_debug_system_tests.cpp",
     ],
diff --git a/libc/malloc_hooks/Android.bp b/libc/malloc_hooks/Android.bp
index 3f0640b..06e91c6 100644
--- a/libc/malloc_hooks/Android.bp
+++ b/libc/malloc_hooks/Android.bp
@@ -60,11 +60,6 @@
     name: "malloc_hooks_system_tests",
     isolated: true,
 
-    // The clang-analyzer-unix.Malloc and other warnings in these
-    // unit tests are either false positive or in
-    // negative tests that can be ignored.
-    tidy: false,
-
     srcs: [
         "tests/malloc_hooks_tests.cpp",
     ],
diff --git a/libm/Android.bp b/libm/Android.bp
index ee86959..69cfb14 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -32,7 +32,6 @@
 
     whole_static_libs: ["libarm-optimized-routines-math"],
 
-    tidy_disabled_srcs: ["upstream-*/**/*.c"],
     srcs: [
         "upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c",
         "upstream-freebsd/lib/msun/src/catrig.c",
@@ -404,9 +403,6 @@
         "-Wl,--Bsymbolic-functions",
     ],
 
-    // b/120614316, non-critical readibility check
-    tidy_checks: ["-cert-dcl16-c"],
-
     include_dirs: ["bionic/libc"],
     target: {
         bionic: {
diff --git a/tests/Android.bp b/tests/Android.bp
index f227bbc..e2ac09a 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -379,9 +379,6 @@
         "bionic_tests_defaults",
         "large_system_property_node_defaults",
     ],
-    tidy_disabled_srcs: [
-        "malloc_test.cpp", // timed out with clang-tidy, and too many warnings
-    ],
     srcs: [
         "__aeabi_read_tp_test.cpp",
         "__cxa_atexit_test.cpp",
@@ -657,7 +654,6 @@
     static_libs: [
         "libbase",
     ],
-    tidy: false,
     target: {
         musl: {
             // Musl doesn't have fortify
@@ -666,12 +662,12 @@
     },
 }
 
-// Ensure we don't use FORTIFY'ed functions with the static analyzer/clang-tidy:
+// Ensure we don't use FORTIFY'ed functions with the clang static analyzer:
 // it can confuse these tools pretty easily. If this builds successfully, then
 // __clang_analyzer__ overrode FORTIFY. Otherwise, FORTIFY was incorrectly
 // enabled. The library that results from building this is meant to be unused.
 cc_test_library {
-    name: "fortify_disabled_for_tidy",
+    name: "fortify_disabled_for_clang_analyzer",
     defaults: [
         "bionic_clang_fortify_tests_w_flags",
     ],
@@ -681,7 +677,6 @@
         "-D__clang_analyzer__",
     ],
     srcs: ["clang_fortify_tests.cpp"],
-    tidy: false,
 }
 
 cc_test_library {
@@ -723,7 +718,6 @@
         "-U_FORTIFY_SOURCE",
     ],
     srcs: ["clang_fortify_tests.cpp"],
-    tidy: false,
 }
 
 cc_test_library {
@@ -772,7 +766,6 @@
     srcs: [
         "clang_fortify_c_only_tests.c",
     ],
-    tidy: false,
     shared: {
         enabled: false,
     },
@@ -1428,7 +1421,6 @@
             enabled: true,
         },
     },
-    tidy: false,
     clang_verify: true,
     cflags: [
         "-Wall",