how to remove url parameters in htaccess [closed] - .htaccess

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I have a codigniter site which does not like added url parameters
for example mysite.com/page/value is good but
mysite.com/page/value?url=parameters is bad.
Google ads campaigns attach url parameter for tracking, I want to get rid of these for the call to Codeigniter. (I know there are several ways to do it in codeigniter but I want to do it in htaccess level)
My htaccess is :
<IfModule mod_rewrite.c>
RewriteEngine On
# This is different between local host and production server!!!
RewriteBase /
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>
How should I change it to make it ignore url parameters but still accept mysite/a/b/ urls?

Answer 1

This should remove any query string:
RewriteCond %{QUERY_STRING} .
RewriteRule (.*) $1?

Answer 2

You could test if the query is not empty and stop the rewrite process:
RewriteCond %{QUERY_STRING} !^$
RewriteRule ^ - [L]
Just put this rule before your others and any request with a query does not get beyond this rule.