Remove outdated CUDA SDK string (the text is now consistent with other version choices, and the '9.0' format is already present in the default).

PiperOrigin-RevId: 195855416
diff --git a/configure.py b/configure.py
index b745e37..7d04d3a 100644
--- a/configure.py
+++ b/configure.py
@@ -845,8 +845,8 @@
 def set_tf_cuda_version(environ_cp):
   """Set CUDA_TOOLKIT_PATH and TF_CUDA_VERSION."""
   ask_cuda_version = (
-      'Please specify the CUDA SDK version you want to use, '
-      'e.g. 7.0. [Leave empty to default to CUDA %s]: ') % _DEFAULT_CUDA_VERSION
+      'Please specify the CUDA SDK version you want to use. '
+      '[Leave empty to default to CUDA %s]: ') % _DEFAULT_CUDA_VERSION
 
   for _ in range(_DEFAULT_PROMPT_ASK_ATTEMPTS):
     # Configure the Cuda SDK version to use.