Remove the unused boringssl s390x patch.

PiperOrigin-RevId: 201983890

third_party/boringssl/add_boringssl_s390x.patch

@@ -1,133 +0,0 @@
-diff --git a/src/include/openssl/base.h b/src/include/openssl/base.h
-index 7a3adfb..88012ad 100644
---- a/src/include/openssl/base.h
-+++ b/src/include/openssl/base.h
-@@ -94,6 +94,8 @@ extern "C" {
- #define OPENSSL_PNACL
- #elif defined(__myriad2__)
- #define OPENSSL_32_BIT
-+#elif defined(__s390x__)
-+#define OPENSSL_64_BIT
- #else
- #error "Unknown target CPU"
- #endif
-diff --git a/BUILD b/BUILD
-index 6b645e61..c90b7beb 100644
---- a/BUILD
-+++ b/BUILD
-@@ -40,29 +40,46 @@ config_setting(
-     values = {"cpu": "darwin"},
- )
- 
--boringssl_copts = [
--    # Assembler option --noexecstack adds .note.GNU-stack to each object to
--    # ensure that binaries can be built with non-executable stack.
--    "-Wa,--noexecstack",
--
--    # This is needed on Linux systems (at least) to get rwlock in pthread.
--    "-D_XOPEN_SOURCE=700",
--
--    # This list of warnings should match those in the top-level CMakeLists.txt.
--    "-Wall",
--    "-Werror",
--    "-Wformat=2",
--    "-Wsign-compare",
--    "-Wmissing-field-initializers",
--    "-Wwrite-strings",
--    "-Wshadow",
--    "-fno-common",
--
--    # Modern build environments should be able to set this to use atomic
--    # operations for reference counting rather than locks. However, it's
--    # known not to work on some Android builds.
--    # "-DOPENSSL_C11_ATOMIC",
--] + select({
-+config_setting(
-+    name = "windows",
-+    values = {"cpu": "x64_windows"},
-+    visibility = ["//visibility:public"],
-+)
-+
-+config_setting(
-+    name = "windows_msvc",
-+    values = {"cpu": "x64_windows_msvc"},
-+    visibility = ["//visibility:public"],
-+)
-+
-+boringssl_copts = select({
-+    ":windows": [
-+        "-DWIN32_LEAN_AND_MEAN",
-+    ],
-+    "//conditions:default": [
-+        # Assembler option --noexecstack adds .note.GNU-stack to each object to
-+        # ensure that binaries can be built with non-executable stack.
-+        "-Wa,--noexecstack",
-+
-+        # This is needed on Linux systems (at least) to get rwlock in pthread.
-+        "-D_XOPEN_SOURCE=700",
-+
-+        # This list of warnings should match those in the top-level CMakeLists.txt.
-+        "-Wall",
-+        "-Werror",
-+        "-Wformat=2",
-+        "-Wsign-compare",
-+        "-Wmissing-field-initializers",
-+        "-Wwrite-strings",
-+        "-Wshadow",
-+        "-fno-common",
-+
-+        # Modern build environments should be able to set this to use atomic
-+        # operations for reference counting rather than locks. However, it's
-+        # known not to work on some Android builds.
-+        # "-DOPENSSL_C11_ATOMIC",
-+    ],
-+}) + select({
-     ":linux_x86_64": [],
-     ":mac_x86_64": [],
-     "//conditions:default": ["-DOPENSSL_NO_ASM"],
-@@ -75,18 +92,26 @@ crypto_sources_asm = select({
- })
- 
- # For C targets only (not C++), compile with C11 support.
--boringssl_copts_c11 = boringssl_copts + [
--    "-std=c11",
--    "-Wmissing-prototypes",
--    "-Wold-style-definition",
--    "-Wstrict-prototypes",
--]
-+boringssl_copts_c11 = boringssl_copts + select({
-+    ":windows": [],
-+    ":windows_msvc": [],
-+    "//conditions:default": [
-+        "-std=c11",
-+        "-Wmissing-prototypes",
-+        "-Wold-style-definition",
-+        "-Wstrict-prototypes",
-+    ],
-+})
- 
- # For C targets only (not C++), compile with C11 support.
--boringssl_copts_cxx = boringssl_copts + [
--    "-std=c++11",
--    "-Wmissing-declarations",
--]
-+boringssl_copts_cxx = boringssl_copts + select({
-+    ":windows": [],
-+    ":windows_msvc": [],
-+    "//conditions:default": [
-+        "-std=c++11",
-+        "-Wmissing-declarations",
-+    ],
-+})
- 
- cc_library(
-     name = "crypto",
-@@ -96,6 +121,8 @@ cc_library(
-     includes = ["src/include"],
-     linkopts = select({
-         ":mac_x86_64": [],
-+        ":windows": [],
-+        ":windows_msvc": [],
-         "//conditions:default": ["-lpthread"],
-     }),
-     visibility = ["//visibility:public"],

third_party/toolchains/clang6/CROSSTOOL.tpl

@@ -76,9 +76,6 @@ toolchain {
 
   # This adds a little bit more durability to our Clang build.
   #
-  # At the moment, this only only be needed for:
-  # - add_boringssl_s390x.patch: --Wa,--noexecstack
-  #
   # Folks who do maintenance work on TF Bazel Clang should consider
   # commenting out these lines, while doing that work, to gain a better
   # understanding of what the intersection of support looks like between GCC