Deleted codecov badge

The codecov action GitHub failed because of "Error: Codecov: Failed to properly create commit: The process '/home/runner/work/_actions/codecov/codecov-action/v4/dist/codecov' failed with exit code 1"

One possible solution for this according to https://docs.codecov.com/docs/adding-the-codecov-token#github-actions is to add the codecov token found in Codecov to the GitHub repo. However, handwriterRF is a CSAFE-ISU repo, not one of my personal repos. Because CSAFE-ISU are not a personal repos, Codecov would charge money.

Another possible solution is codecov/codecov-action#1274

README.md

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 # handwriterRF
 
 
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-[![Codecov test
-coverage](https://codecov.io/gh/CSAFE-ISU/handwriterRF/graph/badge.svg)](https://app.codecov.io/gh/CSAFE-ISU/handwriterRF)
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 HandwriterRF is designed to assist forensic document examiners by
 performing a statistical analysis on two handwriting samples. One or
 both of the samples could be from unknown writers. Two hypotheses are

README.qmd

@@ -3,10 +3,6 @@ title: "handwriterRF"
 format: gfm
 ---
 
-<!-- badges: start -->
-  [![Codecov test coverage](https://codecov.io/gh/CSAFE-ISU/handwriterRF/graph/badge.svg)](https://app.codecov.io/gh/CSAFE-ISU/handwriterRF)
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 ```{r setup, include=FALSE}
 knitr::opts_chunk$set(echo = TRUE)
 ```