Fix libtorch file naming in matrix (#6951)

``cxx11-abi`` was removed from file name in all libtorch builds.
This should fix validation of these builds here:
https://github.com/pytorch/test-infra/actions/runs/16472470897/job/46565023340

Author: atalman

tools/scripts/generate_binary_build_matrix.py

@@ -237,11 +237,7 @@ def get_libtorch_install_command(
         if libtorch_config == "debug"
         else libtorch_variant
     )
-    build_name = (
-        f"{prefix}-{devtoolset}-{_libtorch_variant}-latest.zip"
-        if devtoolset == "cxx11-abi"
-        else f"{prefix}-{_libtorch_variant}-latest.zip"
-    )
+    build_name = f"{prefix}-{_libtorch_variant}-latest.zip"
 
     if os == MACOS_ARM64:
         arch = "arm64"
@@ -251,9 +247,7 @@ def get_libtorch_install_command(
 
     elif os == LINUX and (channel in (RELEASE, TEST)):
         build_name = (
-            f"{prefix}-{devtoolset}-{_libtorch_variant}-{CURRENT_VERSION}%2B{desired_cuda}.zip"
-            if devtoolset == "cxx11-abi"
-            else f"{prefix}-{_libtorch_variant}-{CURRENT_VERSION}%2B{desired_cuda}.zip"
+            f"{prefix}-{_libtorch_variant}-{CURRENT_VERSION}%2B{desired_cuda}.zip"
         )
     elif os == WINDOWS and (channel in (RELEASE, TEST)):
         build_name = (