I cannot remove objects that do not fit the metric from the tagged image, how can I remove them?

%%

[B,L] = bwboundaries(BM,'noholes'); %BM is image(2717x1985 double)

imshow(label2rgb(L,@jet,[.5 .5 .5]))

hold on

%%

for k = 1:length(B)

boundary = B{k};

plot(boundary(:,2),boundary(:,1),'w','LineWidth',2)

end

%%

stats = regionprops(L,'Centroid','Eccentricity','MajorAxisLength','MinorAxisLength','Area');

t=0.85;

for k=1:length(B)

boundary = B{k};

Eccentricity=stats(k).Eccentricity;

metric=Eccentricity;

metric_string = sprintf('%2.3f',metric);

if metric <= t;

centroid = stats(k).Centroid;

plot(centroid(1),centroid(2),'k*');

%metriği sağlamayan objelerin silinmesi

else;

L(L==k) = 0;

end;

end;