Trunicate Wordpress title in XML file.

Hello,  I'm having an issue with a vendor,  regarding post titles in an XML feed we are sending them.

The majority of the post titles are like this below.
6-Day, Chocolate Dedicated Class A Driving Job – Hannibal, MO

They (vendors) want us to eliminate the city, state from the title.  so would be just
6-Day, Chocolate Dedicated Class A Driving Job

We have over 2500 jobs, with titles like that. So, is it possible to truncate the title in the feed, so it outputs everything up to the -

Below is the template i created, and the actual feed url is here

<?php
/**
* Template Name: Custom RSS Template - sptshafferfeed
*/
$postCount = 500; // The number of posts to show in the feed
$cacheFile = "wp-content/themes/enfold/rsscache/sptshafferfeed.rss";

if(!file_exists(dirname($cacheFile)))
{
  mkdir(dirname($cacheFile));
}

$posts_per_page = 50;
$paged = 0;
$theres_more = true;
$rss_items = array();
if(file_exists($cacheFile) && !isset($_GET["reset"]))
{
  $rss_items = json_decode(file_get_contents($cacheFile),true);
  if($rss_items == null) { $rss_items = array(); }
}

$charset = get_option( 'blog_charset' );
header( 'Content-Type: ' . feed_content_type( 'rss-http' ) . '; charset=' . $charset, true );
?>
<?php echo '<'.'?xml version="1.0" encoding="utf-8"?'.'>'; ?>
<source>
<title><?php bloginfo_rss( 'name' ); ?> - SmartPhoneTrucker - Shaffer Trucking Job Feed</title>
<link><?php bloginfo_rss('url'); ?></link>
<description><?php bloginfo_rss('description'); ?></description>
<lastBuildDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></lastBuildDate>
<language>en</language>

<?php
while($theres_more)
{
  $result = query_posts( array(
    'post_type' => 'job_listing',
    'paged' => $paged,
    'posts_per_page' => $posts_per_page,
    'tax_query' => array(
        array(
            'taxonomy' => 'job_listing_type', //or tag or custom taxonomy
            'field' => 'id',
            'terms' => array('498')
        )
    )
  ) );

  $number_of_results = count($result);


  while(have_posts())
  {
    // Get the next post
    the_post();

    // Check the cache
    if(isset($rss_items[$post->ID]) && (strtotime($rss_items[$post->ID][0]) == strtotime($post->post_modified)))
    {
      // We have a cached item with the same modified date
      echo $rss_items[$post->ID][1];
    }
    else
    {
      // Either the item isn't cached or the last-modified date has changed
      ob_start();
    ?>
	 <job>
	 	<referencenumber><![CDATA[<?php the_ID(); ?>]]></referencenumber>
		<title><![CDATA[<?php the_title_rss(); ?>]]></title>
		<date><![CDATA[<?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?>]]></date>
		<url><![CDATA[<?php the_permalink_rss(); ?>?utm_source=ShafferSmartPhoneTruckerXMLFeed]]></url>
		<city>
                <?php 
					// Use an output buffer to put the output of the_job_location() into a variable with the same name
					ob_start(); the_job_location(); $the_job_location = ob_get_clean(); 

					// Now extract the content between the ">" and the "<"
					$pos1 = strrpos($the_job_location, "<"); // Find the "<" of the "</a>" tag
					$pos2 = strrpos($the_job_location, ">", $pos1-strlen($the_job_location)) + 1; // Find the last ">" that occurs before the "</a>" tag
					$the_job_location = substr($the_job_location, $pos2, ($pos1-$pos2));

					// And display the text e.g. "Wheatland, WY, United States"
					//echo $the_job_location;
					echo preg_replace('/([^,]+).*/', '$1', $the_job_location );

				?>
		</city>
		
		<?php
			$mystr=get_the_term_list( $post->ID, 'states');
			$temp=strpos($mystr,">");
			$states=str_replace("</a>","",substr($mystr,$temp+1));
		?>
		<state><![CDATA[<?php echo $states; ?>]]></state>
		<country><![CDATA[US]]></country>	
		<?php
			$mystr=get_the_term_list( $post->ID, 'job_listing_category');
			$myseperator=',';
			$mycount=0;
			$drivertype='';
				while(strstr($mystr,">")){
					$temp_a=strpos($mystr,">")+1;
					$temp_b=strpos($mystr,"<",$temp_a);
					$value_length=$temp_b-$temp_a;
					$value=substr($mystr,$temp_a,$value_length);
					$mystr=substr($mystr,($temp_b+4));//add the number of characters in "</a>" which is 4
				if($mycount>0){$drivertype.=$myseperator;}
					$drivertype.=$value;
					$mycount++;
			}
		?>
		<jobtype><![CDATA[<?php echo $drivertype; ?>]]></jobtype>
		<freight><![CDATA[Reefer]]></freight>
		<description><![CDATA[<?php the_excerpt(); echo do_shortcode( '[about-shaffer]' ); ?>]]></description>
		<requirements><![CDATA[<?php echo do_shortcode( '[Qualifications]' ); ?>]]></requirements>

		
	</job>

				
      <?php

      // Get the item's RSS content and add it to the array
      $rss_item = ob_get_flush();
      $rss_items[$post->ID] = array($post->post_modified, $rss_item);
    }
  }

  // Save our updates after every page
  file_put_contents($cacheFile, json_encode($rss_items));

  // Check to see if there are more pages
  $theres_more = ($number_of_results == $posts_per_page);
  $paged++;
}
  ?>
  </source>

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