tearing spellbooks while confused

Reported to the newsgroup, the code in study_book for the effect of
confusion on studying a book was never reached.  Removed the deprecated
check from read.c

doc/fixes34.1

@@ -211,6 +211,7 @@ rolling boulder hitting monster stuck in pit should stop even when mon survives
 don't see chest trap gas colors while Blind
 adjust fruit name in potion juice messages if it has the form "foo of bar"
 wielded camera passes harmlessly through shade
+reading spellbooks while confused should allow tearing the book
 
 
 Platform- and/or Interface-Specific Fixes

src/read.c

@@ -127,11 +127,7 @@ doread()
 	if (scroll->otyp == SCR_MAIL) confused = FALSE;
 #endif
 	if(scroll->oclass == SPBOOK_CLASS) {
-	    if(confused) {
-		You("cannot grasp the meaning of this tome.");
-		return(0);
-	    } else
-		return(study_book(scroll));
+	    return(study_book(scroll));
 	}
 	scroll->in_use = TRUE;	/* scroll, not spellbook, now being read */
 	if(scroll->otyp != SCR_BLANK_PAPER) {