remove unnecessary cite by andres advice

thesis/content/30_performance.tex

@@ -30,7 +30,7 @@ Timing in the outer loop may display lower throughput than actual. This is the c
     \label{fig:benchmark-function:outer}
 \end{figure}
 
-To get accurate results, the benchmark is repeated 10 times. Each iteration is timed from beginning to end, marked by yellow in Figure \ref{fig:benchmark-function:outer}. For small task sizes, the iterations complete in a very short amount of time, which can have adverse effects on the results \cite{time-longer-sections}. Therefore, we repeat the code of the inner loop for a configurable amount, virtually extending the duration of a single iteration for these cases. \par
+To get accurate results, the benchmark is repeated 10 times. Each iteration is timed from beginning to end, marked by yellow in Figure \ref{fig:benchmark-function:outer}. For small task sizes, the iterations complete in a very short amount of time, which can have adverse effects on the results. Therefore, we repeat the code of the inner loop for a configurable amount, virtually extending the duration of a single iteration for these cases. \par
 
 \begin{figure}[h!tb]
     \centering

thesis/own.bib

@@ -254,10 +254,3 @@
   date = "2023",
   howpublished = "personal communication"
 }
-
-@misc{time-longer-sections,
-  author = "Horst Schirmeier",
-  title={{Length of timed Sections}},
-  date = "2023",
-  howpublished = "personal communication"
-}