fix(core): allow the override of the executeable via common or instance config (#3218)

linuxgsm.sh

@@ -452,7 +452,6 @@ else
 			eval preexecutable="$(sed -nr 's/^ *preexecutable=(.*)$/\1/p' "${configdirserver}/_default.cfg")"
 		fi
 		eval startparameters="$(sed -nr 's/^ *startparameters=(.*)$/\1/p' "${configdirserver}/_default.cfg")"
-		eval executable="$(sed -nr 's/^ *executable=(.*)$/\1/p' "${configdirserver}/_default.cfg")"
 	fi
 
 	# Load the linuxgsm.sh in to tmpdir. If missing download it.