Remove start and stop dates from the searchable text properties

As it will get the string represenation of the dates, and not even
the date formatted given the system / user preferences. Thus it makes
no sense to fulltext search on it.

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Accounting%20Period.xml

@@ -77,8 +77,6 @@ Once the period is closed (i.e. the Accounting Period Delimiter is in delivered
                 <string>title</string>
                 <string>short_title</string>
                 <string>description</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Accounting%20Transaction.xml

@@ -84,8 +84,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Balance%20Transaction.xml

@@ -87,8 +87,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Internal%20Invoice%20Transaction.xml

@@ -85,8 +85,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Payment%20Transaction.xml

@@ -84,8 +84,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Purchase%20Invoice%20Transaction.xml

@@ -86,8 +86,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_accounting/PortalTypeTemplateItem/portal_types/Sale%20Invoice%20Transaction.xml

@@ -90,8 +90,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>

bt5/erp5_immobilisation/PortalTypeTemplateItem/portal_types/Amortisation%20Transaction.xml

@@ -63,8 +63,6 @@
                 <string>destination_reference</string>
                 <string>source_section_title</string>
                 <string>destination_section_title</string>
-                <string>start_date</string>
-                <string>stop_date</string>
               </tuple>
             </value>
         </item>