diff --git a/core/src/main/kotlin/org/nwapw/abacus/variables/VariableDatabase.kt b/core/src/main/kotlin/org/nwapw/abacus/variables/VariableDatabase.kt
deleted file mode 100644
index 405f26a..0000000
--- a/core/src/main/kotlin/org/nwapw/abacus/variables/VariableDatabase.kt
+++ /dev/null
@@ -1,37 +0,0 @@
-package org.nwapw.abacus.variables
-
-import org.nwapw.abacus.Abacus
-import org.nwapw.abacus.number.NumberInterface
-import org.nwapw.abacus.plugin.PluginListener
-import org.nwapw.abacus.plugin.PluginManager
-import org.nwapw.abacus.tree.TreeNode
-
-/**
- * A database for variables and definition.
- *
- * The variable database is used to keep track of
- * variables and definitions throughout the calculator.
- *
- * @property abacus the Abacus instance.
- */
-class VariableDatabase(val abacus: Abacus): PluginListener {
-
-    /**
-     * The variables that are stored in the database.
-     */
-    val variables = mutableMapOf<String, NumberInterface>()
-    /**
-     * The definitions that are stored in the database.
-     */
-    val definitions = mutableMapOf<String, TreeNode>()
-
-    override fun onLoad(manager: PluginManager?) {
-
-    }
-
-    override fun onUnload(manager: PluginManager?) {
-        variables.clear()
-        definitions.clear()
-    }
-
-}
\ No newline at end of file