nit: remove unnecessary comments

Author: ohmayr

testing/constraints-3.10.txt

@@ -1,10 +1,3 @@
-# This constraints file is used to check that lower bounds
-# are correct in setup.py
-# List *all* library dependencies and extras in this file.
-# Pin the version to the lower bound.
-#
-# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
-# Then this file should have foo==1.14.0
 # Test an old version of google-auth against the latest version of api-core.
 httplib2==0.19.0
 google-auth==1.32.0

testing/constraints-3.8.txt

@@ -1,10 +1,3 @@
-# This constraints file is used to check that lower bounds
-# are correct in setup.py
-# List *all* library dependencies and extras in this file.
-# Pin the version to the lower bound.
-#
-# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
-# Then this file should have foo==1.14.0
 # Test a new version of google-auth against the minimum supported version of api-core.
 httplib2==0.19.0
 google-auth

testing/constraints-3.9.txt

@@ -1,10 +1,3 @@
-# This constraints file is used to check that lower bounds
-# are correct in setup.py
-# List *all* library dependencies and extras in this file.
-# Pin the version to the lower bound.
-#
-# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
-# Then this file should have foo==1.14.0
 # Test the latest version of google-auth against the version of
 # api-core with ClientOptions.universe_domain.
 httplib2==0.19.0