[MINOR] Changed root .gitignore.

- So far, daphne/mlir/log files where ignored everywhere (but daphne-files were allowed under test/).
- But actually, I think we want to disallow them only in the DAPHNE root directory (where they are put sometimes and clutter the list of files) and allow them everywhere else, e.g., under scripts/, test/, etc.

.gitignore

@@ -29,10 +29,10 @@ __pycache__/
 .clion.source.upload.marker
 
 # local test/dev scripts
-tmpdaphne.daphne
-*.daphne
-*.mlir
-*.log
+/tmpdaphne.daphne
+/*.daphne
+/*.mlir
+/*.log
 
 # cuda compiler
 compiler-debug-cuda.txt
@@ -61,7 +61,3 @@ profiler/
 precompiled-dependencies/
 /cmake*/
 /data
-
-# Allow .daphne and .mlir files in test/
-!test/**/*.mlir
-!test/**/*.daphne