fix(node_modules): remove hardcoded symlink (#16975)

* add node_modules directory to gitignore

* remove node_modules symlink
diff --git a/erpnext/public/.gitignore b/erpnext/public/.gitignore
new file mode 100644
index 0000000..3c3629e
--- /dev/null
+++ b/erpnext/public/.gitignore
@@ -0,0 +1 @@
+node_modules