Do not ignore files that are being tracked by git

.gitignore

@@ -189,9 +189,6 @@ uptime-*.json
 /src/test/test-memwipe.exe
 /src/test/test-switch-id.exe
 /src/test/test_workqueue.exe
-/src/test/test_zero_length_keys.sh
-/src/test/test_ntor.sh
-/src/test/test_bt.sh
 
 # /src/tools/
 /src/tools/tor-checkkey