$string = q{ 
print "Content-type:text/html\n\n";
print "Some big hunk of code\n";
print("Content-type:text/html","\n","\n");
print ('Content-type: text/html',"\n","\n");
print "Yet another big hunk of code\n";
print "Yet more big hunks of code\n";
print ("Content-type: text/html"); print 'Content-type: text/html',"\n\n";
print "Some other big hunk of code that does something really cool\n";
print ("Content-type: text/html"); print 'CONTENT-type: text/html' , "\n", "\n";
print "Some code that ends the program\n";
};

print $string,"\n";

$string =~ s/print[\s'"\(]+content-type:\s*text\/html[\\nr\s'"\),]+;//gi;

print "---------------\n";
print $string,"\n";