refactor: adjusted latex of drawings

contents/drawings/720.tex

@@ -1,13 +1,8 @@
-%
 % Author: Michael Groni, DB7YI
 % Year: 2023
-%
-
 % FT8-Signal mit zu hohem Audio-Pegel am Mikrofoneingang screen
-
 \begin{tikzpicture}	
 	\begin{axis}[
-		% axis lines=center,
         width=\linewidth*\getDarcImageFactor,
         height=\linewidth*\getDarcImageFactor,
 		scale only axis,
@@ -19,11 +14,7 @@
 		xticklabels={,{f$_{t}$ + 1 kHz},{f$_{t}$ + 5 kHz},{f$_{t}$ + 9 kHz}},
 		xtick distance=21,
 		tick align=outside,
-		% scaled ticks=false,
 		clip=false,
-		% xlabel={$t$}, xlabel style={anchor=north},
-		% ylabel={$U$}, ylabel style={anchor=east},
-		% title=FT8,
 		xmin=-26.7, xmax=26.7, ymin=0, ymax=10,
 	]			
 		\addplot graphics [xmin=-26.7, xmax=26.7, ymin=0, ymax=10] {"foto/162"};