Rename test files

diff --git a/t/02_database_commitratio.t b/t/02_commitratio.t
similarity index 100%
rename from t/02_database_commitratio.t
rename to t/02_commitratio.t

diff --git a/t/02_database_hitratio.t b/t/02_hitratio.t
similarity index 100%
rename from t/02_database_hitratio.t
rename to t/02_hitratio.t