Fix objc weak errors by removing an unused delegate (#3062)

This code still seems wrong, though: -tableView:objectValueForTableColumn:row: is not the appropriate place to return cell objects

Source/SPNarrowDownCompletion.h

@@ -32,7 +32,7 @@

@class SPDatabaseStructure;

@interface SPNarrowDownCompletion : NSWindow <NSTableViewDelegate, NSTableViewDataSource, NSTokenFieldCellDelegate>
@interface SPNarrowDownCompletion : NSWindow <NSTableViewDelegate, NSTableViewDataSource>
{
	NSArray* suggestions;
	NSMutableString* mutablePrefix;

Source/SPNarrowDownCompletion.m

@@ -163,6 +163,9 @@ - (void)dealloc
	SPClear(mutablePrefix);
	SPClear(textualInputCharacters);
	SPClear(originalFilterString);
	[theTableView setDataSource:nil];
	[theTableView setDelegate:nil];
	SPClear(theTableView);
	if (staticPrefix)               SPClear(staticPrefix);
	if (syncArrowImages)            SPClear(syncArrowImages);
	if (suggestions)                SPClear(suggestions);
@@ -353,7 +356,7 @@ - (void)setupInterface
	[[scrollView verticalScroller] setControlSize:NSSmallControlSize];
	[[scrollView horizontalScroller] setControlSize:NSSmallControlSize];

	theTableView = [[[NSTableView alloc] initWithFrame:NSZeroRect] autorelease];
	theTableView = [[NSTableView alloc] initWithFrame:NSZeroRect];
	[theTableView setFocusRingType:NSFocusRingTypeNone];
	[theTableView setAllowsEmptySelection:YES];
	[theTableView setHeaderView:nil];
@@ -557,7 +560,6 @@ - (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColu
			[b setEditable:NO];
			[b setAlignment:NSRightTextAlignment];
			[b setFont:[NSFont systemFontOfSize:11]];
			[b setDelegate:self];
			return b;
		}