Remove tools folder

tools/README.md

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-![rGuiLayout logo](rGuiLayout/logo/rguilayout_128x128.png) ![rGuiStyler logo](rGuiStyler/logo/rguistyler_128x128.png)
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-## rGuiLayout and rGuiStyler
-Two tools are distributed together with **raygui library** to help on imgui development and styling.
-
-**rGuiLayout** is a visual layout editor to place controls in a visual way, defined layout could be saved and exported to C code.
-
-![rGuiLayout help panel](rGuiLayout/screenshots/screenshot000.png)
-
-![rGuiLayout controls panel](rGuiLayout/screenshots/screenshot003.png)
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-**rGuiSyler** is a raygui visual styles editor to create color-sizes variants of default raygui styles
-
-![rGuiStyler light style](rGuiStyler/screenshots/screenshot000.png)
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-![rGuiStyler candy style](rGuiStyler/screenshots/screenshot003.png)
-
-Check those tools folders for further information.
-
-*Copyright (c) 2017-2018 raylib technologies ([@raysan5](https://twitter.com/raysan5))*