Remove duplicate title header on readme #3050

Job	Run time
website / pkgdown	8m 22s
routine / routine	8m 27s
R-CMD-check / setup	42s
R-CMD-check / macOS-latest (4.4.2)	3m 3s
R-CMD-check / windows-latest (4.4.2)	4m 9s
R-CMD-check / ubuntu-latest (devel)	2m 48s
R-CMD-check / ubuntu-latest (4.4.2)	2m 22s
R-CMD-check / ubuntu-latest (4.3.3)	2m 26s
R-CMD-check / ubuntu-latest (4.2.3)	2m 51s
R-CMD-check / ubuntu-latest (4.1.3)	2m 56s
R-CMD-check / ubuntu-latest (4.0.5)	2m 40s
Deploy to shinyapps.io	0s
	40m 46s

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