Remove redundant type attributes

[Xeevis]

Type attributes on <script> and <link ref="stylesheet"> are redundant because currently set values are the default, which leads to warnings in the W3C Markup Validation Service

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Quote from HTML 5.2 W3C Recommendation (§ 4.12.1. The script element)

The type attribute allows customization of the type of script represented:

Omitting the attribute, or setting it to a JavaScript MIME type, means that the script is a classic script, to be interpreted according to the JavaScript Script top-level production. Classic scripts are affected by the charset, async, and defer attributes. Authors should omit the attribute, instead of redundantly giving a JavaScript MIME type.

Quote from HTML 5.2 W3C Recommendation (§ 4.8.6.11. Link type "stylesheet")

The default type for resources given by the stylesheet keyword is text/css.

[hikalkan]

Thanks @Xeevis for make it clean.