Remove XLA tanh fix cherry-pick, to avoid CI breakages when the XLA commit is

bumped.

third_party/xla/tanh.patch

@@ -1,14 +0,0 @@
-diff --git a/xla/service/cpu/llvm_ir_runtime.cc b/xla/service/cpu/llvm_ir_runtime.cc
-index 89b40b915caa3..25541c16bfd61 100644
---- a/xla/service/cpu/llvm_ir_runtime.cc
-+++ b/xla/service/cpu/llvm_ir_runtime.cc
-@@ -410,7 +410,8 @@ void RewriteIRRuntimeFunctions(llvm::Module* module,
-   rewrite_calls(kTanhV8F32SymbolName, GenerateVF32Tanh, /*vector_width=*/8);
-   rewrite_calls(kTanhV16F32SymbolName, GenerateVF32Tanh, /*vector_width=*/16);
- 
--  rewrite_calls("tanh", GenerateVF64Tanh, /*vector_width=*/1);
-+  // TODO(penporn): Re-enable after fixing JAX issue #23590.
-+  // rewrite_calls("tanh", GenerateVF64Tanh, /*vector_width=*/1);
- 
-   rewrite_calls("expf", GenerateVF32Exp, /*vector_width=*/1);
-   rewrite_calls("llvm.exp.f32", GenerateVF32Exp, /*vector_width=*/1);

third_party/xla/workspace.bzl

@@ -30,9 +30,6 @@ def repo():
         sha256 = XLA_SHA256,
         strip_prefix = "xla-{commit}".format(commit = XLA_COMMIT),
         urls = tf_mirror_urls("https://github.com/openxla/xla/archive/{commit}.tar.gz".format(commit = XLA_COMMIT)),
-        patch_file = [
-            "//third_party/xla:tanh.patch",
-        ],
     )
 
     # For development, one often wants to make changes to the TF repository as well