remove r package dependency

workflows/clustering_PCA_HCL.R

 ## PCA
 # we need a few plotting-related libraries we have not used before
-library(ggrepel)
+library(ggplot2)
 
 load(file = "runs/kallisto_combined/mothertableV2.Rdata")
 
@@ -43,7 +43,7 @@ scores
 pca12 <- ggplot(data = scores, aes(x = PC1, y = PC2)) +
   theme_bw() +
   geom_point(aes(color = treatment), size = 2.5) +
-  geom_text_repel(aes(label = treatment), size = 3) +
+  geom_text(aes(label = treatment), vjust = 1.5, size = 3) +
   labs(
     x = paste0("PCA1 (", s$importance[2, 1] * 100, "%)"),
     y = paste0("PCA2 (", s$importance[2, 2] * 100, "%)")