Click on the joint whose load is to be deleted.
List of joint loads, with selected joint highlighted, becomes visible.
In any row #,U,V,W,X,Y,Z
'#' represents Joint Number.
'U' represents applied load in global X-axis direction.
'V' represents applied load in global Y-axis direction.
'W' represents applied load in global Z-axis direction.
'X' represents applied moment about global X-axis direction.
'Y' represents applied moment about global Y-axis direction.
'Z' represents applied moment about global Z-axis direction.
Hold down [ctrl] key and Click on Delete Joint Load.