SYCL is built by default using hermetic Clang.
GCC is no longer supported for SYCL builds.

PiperOrigin-RevId: 817821428
diff --git a/third_party/xla/build_tools/configure/configure.py b/third_party/xla/build_tools/configure/configure.py
index bf7e664..30729ca 100755
--- a/third_party/xla/build_tools/configure/configure.py
+++ b/third_party/xla/build_tools/configure/configure.py
@@ -437,8 +437,6 @@
       if compiler_pair == (SyclCompiler.ICPX, HostCompiler.CLANG):
         rc.append("build --config sycl")
         rc.append("build --config icpx_clang")
-      elif compiler_pair == (SyclCompiler.ICPX, HostCompiler.GCC):
-        rc.append("build --config sycl")
       else:
         raise NotImplementedError(" Sycl with host compiler not supported")
 
@@ -630,7 +628,6 @@
 def is_hermetic_build(backend: Backend, os_host: OS):
   return (
       backend != Backend.ROCM
-      and backend != Backend.SYCL
       and os_host == OS.LINUX
   )