tests: let START_SET manage the autorelease pool

START_SET creates an autorelease pool and END_SET releases it, so the pool
these tests create around the set is redundant.

Author: DTW-Thalion

Tests/gui/NSBrowser/lastColumn.m

@@ -46,7 +46,6 @@ - (void) browser: (NSBrowser *)browser
 int
 main(int argc, const char **argv)
 {
-  CREATE_AUTORELEASE_POOL(arp);
   NSBrowser *browser;
   ColumnWatcher *watcher;
 
@@ -98,7 +97,6 @@ - (void) browser: (NSBrowser *)browser
 
   END_SET("NSBrowser last column delegate method")
 
-  DESTROY(arp);
 
   return 0;
 }

Tests/gui/NSBrowser/typeSelect.m

@@ -136,7 +136,6 @@ - (NSInteger) browser: (NSBrowser *)browser
 int
 main(int argc, const char **argv)
 {
-  CREATE_AUTORELEASE_POOL(arp);
   NSBrowser *browser;
   Vetoer *vetoer;
   Searcher *searcher;
@@ -205,7 +204,6 @@ - (NSInteger) browser: (NSBrowser *)browser
 
   END_SET("NSBrowser type select delegate methods")
 
-  DESTROY(arp);
 
   return 0;
 }