remove 'core' as it matches a package directory
diff --git a/scripts/migration_script.sh b/scripts/migration_script.sh
index 3a8ffb6..7fcc88b 100644
--- a/scripts/migration_script.sh
+++ b/scripts/migration_script.sh
@@ -330,7 +330,6 @@
*~
*.rej
*.bak
-core
*.patch
javacore.*
heapdump.*
@@ -644,7 +643,6 @@
*~
*.rej
*.bak
-core
*.patch
javacore.*
heapdump.*
@@ -897,7 +895,6 @@
*~
*.rej
*.bak
-core
*.patch
javacore.*
heapdump.*
@@ -1061,7 +1058,6 @@
*~
*.rej
*.bak
-core
*.patch
javacore.*
heapdump.*