Removes those extra-tempting but extra-problematic buttons from tinyMCE, like font color, alignment, and other things that will wreck your style sheet.
In addition, it removes “Heading 1” from the role dropdown, as there should never be more than one H1 on a page — and the page or post title is already it.
<h4>Why Does Formatting Matter?</h4>
When people first get their hands on that shiny WordPress text editor, they often get swept up in the excitement of styling their text. “This is important, so I’ll make it red! And this part will be centered, and this part will use giant letters!”
But as fun as this is, there’s a way to use the WordPress text composer like a pro, and the benefits of doing it in that way are big:
<ul>
<li>Better potential rankings on search engines (Search Engine Optimization)</li>
<li>A consistent look across your whole website and other materials (research shows that visual consistency leads to trust)</li>
<li>Better flexibility across different devices, from desktops to mobile phones</li>
<li>Better accessibility for readers with a wide range of disabilities.</li>
<li>Better maintainability when it comes to future site updates — that means savings!</li>
<li>What’s the secret sauce that provides all these benefits?</li>
</ul>
Mark your text with what it is, not what it should look like.
<h4>What does that mean?</h4>
It means that your website already has a style guide built into it, so that it knows that a subtitle looks a certain way — perhaps it is larger, bold, or a different color than the main text. So when you type in a subtitle, you only need to let WordPress know that it’s a subtitle, and the rest will be taken care of. Do not give in to the temptation to mark the subtitle text as bold, larger, centered or a different color from the WordPress editor.
This plugin removes the most damaging buttons from the WordPress editor, so you (or your clients) won’t be tempted to use them.
For more information on how to use the WordPress editor like a pro, with or without this plugin, and why formatting matters to brand consistency, SEO, accessibility and even maintainability, check out this blog post: http://www.pixelovely.com/format-web-content-wordpress
<h3>Show your appreciation for this plugin</h3>
If I’ve helped you, please consider <a href="https://ko-fi.com/U6U31XPQI" rel="nofollow ugc">buying me a slice of pizza to fuel my coding</a> .

Remove Problematic Formatting Options From tinyMCE

Removes those extra-tempting but extra-problematic buttons from tinyMCE, like font color, alignment, and other things that will wreck your style sheet …

Andrew Ozz

This plugin is intended for more advanced users that would like to change the default TinyMCE configuration in WordPress. 
It makes it very easy to add, remove or change all TinyMCE settings for the classic editor and for the classic block in the block editor.

Advanced TinyMCE Configuration

Set advanced TinyMCE options for the classic block and classic editor.

Remove Problematic Formatting Options From tinyMCE vs Advanced TinyMCE Configuration