Remove unused `how-to-use-scheme' string.

collects/string-constants/danish-string-constants.rkt

@@ -132,7 +132,6 @@ please adhere to these guidelines:
   (web-materials "Relaterede websites") ;; menu item title
   (tool-web-sites "Tool Web Sites")   ;; menu item title
   (plt-homepage "Racket")
-  (how-to-use-scheme "How to Use Scheme") ;; title of a book.
   (pbd-homepage "Program by Design")
   
   ;;; bug report form

collects/string-constants/dutch-string-constants.rkt

@@ -32,7 +32,6 @@
  ;;; important urls
  (web-materials "Verwante Web Sites") ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "How to Use Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/english-string-constants.rkt

@@ -134,7 +134,6 @@ please adhere to these guidelines:
  (web-materials "Related Web Sites") ;; menu item title
  (tool-web-sites "Tool Web Sites")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "How to Use Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/french-string-constants.rkt

@@ -134,7 +134,6 @@
   (web-materials "Sites web apparentés") ;; menu item title
   (tool-web-sites "Sites web d'outils")   ;; menu item title
   (plt-homepage "Racket")
-  (how-to-use-scheme "How to Use Scheme") ;; title of a book.
   (pbd-homepage "Program by Design")
   
   ;;; bug report form

collects/string-constants/german-string-constants.rkt

@@ -36,7 +36,6 @@
  (web-materials "Verwandte Web-Seiten")
  (tool-web-sites "Web-Seiten mit Tools")
  (plt-homepage "Racket")
- (how-to-use-scheme "How to Use Scheme")
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/japanese-string-constants.rkt

@@ -134,7 +134,6 @@ please adhere to these guidelines:
  (web-materials "関連するウェブサイト") ;; menu item title
  (tool-web-sites "ツールのウェブサイト")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "How to Use Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/korean-string-constants.rkt

@@ -52,7 +52,6 @@
  (web-materials "관련 사이트") ;; menu item title
  (tool-web-sites "참고 사이트")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "How to Use Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/portuguese-string-constants.rkt

@@ -134,7 +134,6 @@ please adhere to these guidelines:
  (web-materials "Sítios Web Relacionados") ;; menu item title
  (tool-web-sites "Sítios Web de Ferramentas")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "Como Usar o Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/russian-string-constants.rkt

@@ -134,7 +134,6 @@ please adhere to these guidelines:
  (web-materials "Связанные Web-сайты") ;; menu item title
  (tool-web-sites "Web-сайты установленных инструментов")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "Как использовать Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form

collects/string-constants/simplified-chinese-string-constants.rkt

@@ -61,7 +61,6 @@
   (web-materials "相关网站") ;; menu item title
   (tool-web-sites "Tools网站")   ;; menu item title
   (plt-homepage "Racket")
-  (how-to-use-scheme "How to Use Scheme") ;; title of a book.
   (pbd-homepage "Program by Design")
   
   ;;; bug report form

collects/string-constants/spanish-string-constants.rkt

@@ -42,7 +42,6 @@
  (web-materials "Sitios de Web Relacionados")
  (tool-web-sites "Sitios de Web de Herramientas")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "Cómo Usar Scheme")
  (pbd-homepage "Program by Design")
  
  ;;; bug report form

collects/string-constants/traditional-chinese-string-constants.rkt

@@ -60,7 +60,6 @@
   (web-materials "相关网站") ;; menu item title
   (tool-web-sites "Tools网站")   ;; menu item title
   (plt-homepage "Racket")
-  (how-to-use-scheme "How to Use Scheme") ;; title of a book.
   (pbd-homepage "Program by Design")
   
   ;;; bug report form

collects/string-constants/ukrainian-string-constants.rkt

@@ -134,7 +134,6 @@ please adhere to these guidelines:
  (web-materials "Пов'язані Web-сайти") ;; menu item title
  (tool-web-sites "Web-сайти встановлених інструментів")   ;; menu item title
  (plt-homepage "Racket")
- (how-to-use-scheme "Як використовувати Scheme") ;; title of a book.
  (pbd-homepage "Program by Design")
 
  ;;; bug report form