I uploaded the pages including my header.php
to wordpress and my header have auto generated  
in it together with #text.
I tried adding this code but nothing happens.
remove_filter( 'the_content', 'wpautop' );
remove_filter( 'the_excerpt', 'wpautop' );
Are there any solutions for this?
Edit:
This is where " " shows up:
https://i.stack.imgur.com/yvQgI.jpg
So your theme is outputting
 
in the "nav menu items". So try to use the following code, see if it removes those extra spaces!Code goes into your
functions.php
file of your theme.