Delete unused test code in modules/video_coding/test/

webrtc/modules/video_coding/test/plotTimingTest.m

-function plotTimingTest(filename)
-fid=fopen(filename);
-
-%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; Stochastic test 1
-%DEBUG     ; ( 9:53:33:859 |    0) VIDEO CODING:-1         ;      7132; Frame decoded: timeStamp=3000 decTime=10 at 10012
-%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; timeStamp=3000 clock=10037 maxWaitTime=0
-%DEBUG     ; ( 9:53:33:859 |    0)        VIDEO:-1         ;      7132; timeStampMs=33 renderTime=54
-line = fgetl(fid);
-decTime = [];
-waitTime = [];
-renderTime = [];
-foundStart = 0;
-testName = 'Stochastic test 1';
-while ischar(line)
-    if length(line) == 0
-        line = fgetl(fid);
-        continue;
-    end
-    lineOrig = line;
-    line = line(72:end);
-    if ~foundStart
-        if strncmp(line, testName, length(testName)) 
-            foundStart = 1;
-        end
-        line = fgetl(fid);
-        continue;
-    end
-    [p, count] = sscanf(line, 'Frame decoded: timeStamp=%lu decTime=%d maxDecTime=%d, at %lu');
-    if count == 4
-        decTime = [decTime; p'];
-        line = fgetl(fid);
-        continue;
-    end
-    [p, count] = sscanf(line, 'timeStamp=%u clock=%u maxWaitTime=%u');
-    if count == 3
-        waitTime = [waitTime; p'];
-        line = fgetl(fid);
-        continue;
-    end
-    [p, count] = sscanf(line, 'timeStamp=%u renderTime=%u');
-    if count == 2
-        renderTime = [renderTime; p'];
-        line = fgetl(fid);
-        continue;
-    end    
-    line = fgetl(fid);
-end
-fclose(fid);
-
-% Compensate for wrap arounds and start counting from zero.
-timeStamps = waitTime(:, 1);
-tsDiff = diff(timeStamps);
-wrapIdx = find(tsDiff < 0);
-timeStamps(wrapIdx+1:end) = hex2dec('ffffffff') + timeStamps(wrapIdx+1:end);
-timeStamps = timeStamps - timeStamps(1);
-
-figure;
-hold on;
-plot(timeStamps, decTime(:, 2), 'r');
-plot(timeStamps, waitTime(:, 3), 'g');
-plot(timeStamps(2:end), diff(renderTime(:, 2)), 'b');
-legend('Decode time', 'Max wait time', 'Render time diff');