WMEric

This free WooCommerce extension permits you to hide categories on your shops main page. 
For this you have to save the categories with ‘,’ seperated in woocommerce > settings > products tab section.
In order for this to work you have to have Categories displayed. This can be set via Customizer. Appearance > Customize > WooCommerce > Product Catalog.
“Choose what to display on the main shop page.” Select Show categories as seen in the Screenshot below.
<h3>Additional Information</h3>
For users who has a different/custom page for their shop you can edit the wc-hide-categories.php file 
Find line # 127 and remove //
<pre><code>//$mwd_opt4 = in_array( 'product_cat', $taxonomies ) && ! is_admin() && is_page('YOUR_PAGE_SLUG'),
</code></pre>
Then find line #129 <code>/*|| $mwd_opt4*/</code>
Change to 
 || $mwd_opt4
To remove products from those categories find line 160
<pre><code>// Uncomment the function below if you also want those products hidden
/*
 add_action( 'woocommerce_product_query', 'mwd_hwcosp_remove_product_in_cat' );

 function mwd_hwcosp_remove_product_in_cat( $q ) {
 //hwcosp_global is the databse row entry
 $opt_terms = get_option('hwcosp_global');

 // Processes our users data to the way we want it from above
 $data = mwd_hwcosp_comma_separated_to_array($opt_terms);

 $tax_query = (array) $q->get('tax_query');
 $tax_query[] = array(
 'taxonomy' => 'product_cat',
 'field' => 'slug',
 'terms' => $data, // Set Category Slug which products not show on the shop and Archieve page.
 'operator' => 'NOT IN'
 );
 $q->set( 'tax_query', $tax_query );
 }
*/
</code></pre>
The code is well documented so its easy to find what part you are looking for
If you have any question please ask in the support forum, Thanks

Hide Categories On Shop Page

Not only doesn't this plugin work right.  It throws PHP warnings and fills the error log.  
At this point, this plugin hasn't been updated in over a year.

This doesn't work

Simple solution to hide specific categories in you woocommerce shop main page i.e. domain.com/shop This plugin was based on WC Hide Categories On Shop …

azurecurve

Toggle to show/hide content (allows custom title).
[toggle]content[/toggle] to use toggle in basic format.
Set a title by using the title parameter: [toggle title=’Click to show/hide spoiler’]content[/toggle]
Override settings width using width parameter: [toggle width=’75%’]content[/toggle]
Set toggle to default open using the expand parameter: [toggle expand=1]content[/toggle]
Override CSS border using the border parameter: [toggle border=’none’]content[/toggle] or [toggle border=’1px dashed #FF0000′]content[/toggle]
Override settings title colour using the title_color parameter: [toggle title_color=’#000′]content[/toggle]
Override settings title font family using the title_font parameter: [toggle title_font=’Arial, Calibri’]content[/toggle]
Override settings title font size using the title_font_size parameter: [toggle title_font_size=’14px’]content[/toggle]
Override settings title font weight using the title_font_weight parameter: [toggle title_font_weight=600]content[/toggle]
Override settings title background colour using the bgtitle parameter: [toggle bgtitle=’#007FFF’]content[/toggle]
Override settings text colour using the text_color parameter: [toggle bgtext=’#000′]content[/toggle]
Override settings text background colour using the bgtext parameter: [toggle bgtext=’#000′]content[/toggle]
Override settings text font family using the title_font parameter: [toggle text_font=’Arial, Calibri’]content[/toggle]
Override settings text font size using the title_font_size parameter: [toggle text_font_size=’14px’]content[/toggle]
Override settings text font weight using the title_font_weight parameter: [toggle text_font_weight=600]content[/toggle]
Override settings disable title images using disable_image=1 or disable_image=0
Shortcodes can now be used inside the content or title of the toggle (tested with Contact Form 7 and azurecurve BBCode).
Select toggle image in options or network options; allows different sites in a network to use different images. Add extra images by dropping them into the plugins /images folder
This plugin supports language translations. If you want to translate this plugin please sent the .po and .mo files to wordpress.translations@azurecurve.co.uk for inclusion in the next version (full credit will be given). The .pot fie is in the languages folder of the plugin and can also be downloaded from the plugin page on http://wordpress.azurecurve.co.uk.

azurecurve Toggle Show/Hide

Toggle to show/hide content (allows custom title).

Hide Categories On Shop Page vs azurecurve Toggle Show/Hide