lvremove: add page (#4525)

pages/linux/lvremove.md

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+# lvremove
+
+> Remove one or more logical volumes.
+> More information: <https://sourceware.org/lvm2/>.
+
+- Remove a logical volume in a volume group:
+
+`sudo lvremove {{volume_group}}/{{logical_volume}}`
+
+- Remove all logical volumes in a volume group:
+
+`sudo lvremove {{volume_group}}`