TR: remove unnecessary no-account-after-filtering step

This merges the initial 'no-account' warning and the
'no-account-after-filtering' warning. This reduces
the number of strings required.

The user can select some accounts, set an account name
filter which produces no accounts, and will see a
blank report with the gnc:render-options-changed
confirming that options were set, and the blank
filter is caused by the filter.

Example: http://i.imgur.com/eqq1Bpa.png

gnucash/report/standard-reports/transaction.scm

@@ -108,10 +108,6 @@
 (define NO-MATCHING-TRANS-TEXT (_ "No transactions were found that \
 match the time interval and account selection specified \
 in the Options panel."))
-(define NO-MATCHING-ACCT-HEADER (_ "No matching accounts found"))
-(define NO-MATCHING-ACCT-TEXT (_ "No account were found that match the \
-options specified in the Options panels."))
-
 
 (define DATE-SORTING-TYPES (list 'date 'reconciled-date))
 
@@ -1711,25 +1707,17 @@ tags within description, notes or memo. ")
 
     (if (or (null? c_account_1) (and-map not c_account_1))
 
-        (if (null? c_account_0)
+        ;; error condition: no accounts specified or obtained after filtering
+        (begin
 
-            ;; error condition: no accounts specified
           (gnc:html-document-add-object!
            document
            (gnc:html-make-no-account-warning report-title (gnc:report-id report-obj)))
 
-            ;; error condition: accounts were specified but none matched string/regex
-            (begin
-              (gnc:html-document-add-object!
-               document
-               (gnc:make-html-text
-                (gnc:html-markup-h2 NO-MATCHING-ACCT-HEADER)
-                (gnc:html-markup-p NO-MATCHING-ACCT-TEXT)))
-
           (if (member 'no-match infobox-display)
               (gnc:html-document-add-object!
                document
-                   (gnc:render-options-changed options)))))
+               (gnc:render-options-changed options))))
 
         (begin