removing submodule

depends/rpi-rgb-led-matrix/.editorconfig

@@ -0,0 +1,15 @@
+# Editor config file, see http://editorconfig.org/
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{h,cc}]
+indent_size = 2
+
+[Makefile]
+indent_style = tab