Revert "Update gitignore"

This reverts commit 1cb7f1f6ad618372e109c9f5c0b78694a0040eb7.
Revert "Revert "Update gitignore""

This reverts commit b8f87f94a227564b086bf55ec9631507db3cf707.
Revert "Revert "Revert "Update gitignore"""

This reverts commit 0dd7df4fe9d472bc5831c34d7389b09ae4e5f3de.
Delete unecessary files