You can use a simple substitution. [LW] is a character class containing both L and W, the final /g is needed to replace both the letters. 
$string =  "(L 2 W 7)";
$string =~ s/[LW] //g; # Replace L or W followed by a space by nothing
+.
print $string, "\n";

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In reply to Re: regex related...search and delete by choroba
in thread regex related...search and delete by freekngeek

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