Update cheatsheets

tldr/conda-remove

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# conda remove
+
+> Remove packages from a conda environment.
+> More information: <https://docs.conda.io/projects/conda/en/latest/commands/remove.html>.
+
+- Remove `scipy` from the currently active environment:
+
+`conda remove scipy`
+
+- Remove a list of packages from the specified environment:
+
+`conda remove {{[-n|--name]}} {{environment_name}} {{package1 package2 ...}}`
+
+- Remove all packages and the environment itself:
+
+`conda remove {{[-n|--name]}} {{environment_name}} --all`
+
+- Remove all packages, but keep the environment:
+
+`conda remove {{[-n|--name]}} {{environment_name}} --all --keep-env`