gas/app.c don't throw away spaces before slash

I don't know really why we should lose a space before a '/'.  Possibly
it would make sense if '/' started a comment, but otherwise no.

	* app.c (do_scrub_chars): Don't lose spaces before a slash.

gas/ChangeLog

@@ -1,3 +1,7 @@
+2021-03-19  Alan Modra  <amodra@gmail.com>
+
+	* app.c (do_scrub_chars): Don't lose spaces before a slash.
+
 2021-03-18  Christian Groessler  <chris@groessler.org>
 
 	* config/tc-z8k.c (apply_fix): Handle 7-bit relocations correctly.

gas/app.c

@@ -874,7 +874,6 @@ do_scrub_chars (size_t (*get) (char *, size_t), char *tostart, size_t tolen)
 	    }
 #endif
 	  if (IS_COMMENT (ch)
-	      || ch == '/'
 	      || IS_LINE_SEPARATOR (ch)
 	      || IS_PARALLEL_SEPARATOR (ch))
 	    {