[1793] Remove generated file

The file is created during tests so the original one is not destroyed.
So it makes no sense to store the file that is being modified by the
test each run in git.

diff --git a/src/lib/testutils/testdata/auth_test.sqlite3.copied b/src/lib/testutils/testdata/auth_test.sqlite3.copied
deleted file mode 100755 (executable)
index 205e4ef..0000000
Binary files a/src/lib/testutils/testdata/auth_test.sqlite3.copied and /dev/null differ