Tests should not use library("adjclust")

[pneuvial]

According to https://r-pkgs.org/tests.html#test-structure test files in a package should not explicitly load the package. This should be fixed in adjclust:

→ grep library\(\"adjclust\"\) *.R
test_adjclust_equivalentTo_hclust.R:library("adjclust")
test_adjclust_equivalentTo_rioja.R:library("adjclust")
test_ascendingCompatibility.R:library("adjclust")
test_correct.R:library("adjclust")
test_corrected_plot.R:library("adjclust")
test_cuttree.R:library("adjclust")
test_dense_sparse_comparison.R:library("adjclust")
test_final_height.R:library("adjclust")
test_hicClust.R:library("adjclust")
test_modify.R:library("adjclust")
test_plotSim.R:library("adjclust")
test_similarity_equivalentTo_dissimilarity.R:library("adjclust")
test_snpClust.R:library("adjclust")
test_snpClust_NA-in-LD.R:library("adjclust")
test_warning_with_decreasing_height_plots.R:library("adjclust")