Cleanup some files (#1166)

* Remove .cargo folders

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Remove rustfmt.toml

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Hide rustfmt.toml file

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Merge .gitignore files

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update commit hash after history-rewrite

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Try to hot-fix license scanner

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update .gitignore

Co-authored-by: Chevdor <chevdor@users.noreply.github.com>

* Undo changes to check-license

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Chevdor <chevdor@users.noreply.github.com>

.rustfmt.toml

@@ -0,0 +1,27 @@
+# Basic
+hard_tabs = true
+max_width = 100
+use_small_heuristics = "Max"
+# Imports
+imports_granularity = "Crate"
+reorder_imports = true
+# Consistency
+newline_style = "Unix"
+# Misc
+chain_width = 80
+spaces_around_ranges = false
+binop_separator = "Back"
+reorder_impl_items = false
+match_arm_leading_pipes = "Preserve"
+match_arm_blocks = false
+match_block_trailing_comma = true
+trailing_comma = "Vertical"
+trailing_semicolon = false
+use_field_init_shorthand = true
+ignore = [
+    "bridges",
+]
+edition = "2021"
+# Format comments
+comment_width = 100
+wrap_comments = true