remove legend ggplo2 code example

Example: ggplot2 remove legend

### Three options (where p is the plot object)

# Remove the legend title: 
p + theme(legend. title = element_blank())

# Hide the entire legend to create a ggplot with no legend. 
p + theme(legend. position = "none") 

# Hide legend for a specific geometry, say geom_text(). 
p + geom_text(show.legend = FALSE)