Somewhere, we switched from using header-gradient.css to just header.css so deleting the -gradient versions

failover/local/usr/local/nagiosxi/html/includes/components/custom-includes/css/header-gradient.css

@@ -1,7 +0,0 @@
-#header {   
-	background: rgb(59,234,2);
-	background: -moz-linear-gradient(90deg, rgba(59,234,2,1) 0%, rgba(8,124,8,1) 35%);
-	background: -webkit-linear-gradient(90deg, rgba(59,234,2,1) 0%, rgba(8,124,8,1) 35%);
-	background: linear-gradient(90deg, rgba(59,234,2,1) 0%, rgba(8,124,8,1) 35%);
-	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#3bea02",endColorstr="#087c08",GradientType=1); 
-}

failover/local/usr/local/nagiosxi/html/includes/components/custom-includes/css/header-gradient.css.primary

@@ -1,7 +0,0 @@
-#header {   
-	background: rgb(0,0,255);
-	background: -moz-linear-gradient(90deg, rgba(0,0,255,1) 0%, rgba(0,0,0,1) 50%);
-	background: -webkit-linear-gradient(90deg, rgba(0,0,255,1) 0%, rgba(0,0,0,1) 50%);
-	background: linear-gradient(90deg, rgba(0,0,255,1) 0%, rgba(0,0,0,1) 50%);
-	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#0000ff",endColorstr="#000000",GradientType=1); 
-}

failover/local/usr/local/nagiosxi/html/includes/components/custom-includes/css/header-gradient.css.secondary

@@ -1,7 +0,0 @@
-#header {   
-	background: rgb(0,255,0);
-	background: -moz-linear-gradient(90deg, rgba(0,255,0,1) 0%, rgba(0,0,0,1) 50%);
-	background: -webkit-linear-gradient(90deg, rgba(0,255,0,1) 0%, rgba(0,0,0,1) 50%);
-	background: linear-gradient(90deg, rgba(0,255,0,1) 0%, rgba(0,0,0,1) 50%);
-	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#00ff00",endColorstr="#000000",GradientType=1); 
-}