Remove unnecessary hasmapfrom function

src/main/java/com/maddyhome/idea/vim/extension/paragraphmotion/ParagraphMotion.kt

@@ -62,7 +62,7 @@ internal class ParagraphMotion : VimExtension {
     toKeys: List<KeyStroke>,
     recursive: Boolean,
   ) {
-    val filteredModes = modes.filterNotTo(HashSet()) { VimPlugin.getKey().hasmapfrom(it, fromKeys) }
+    val filteredModes = modes.filterNotTo(HashSet()) { VimPlugin.getKey().getKeyMapping(it)[fromKeys] != null }
     putKeyMappingIfMissing(filteredModes, fromKeys, pluginOwner, toKeys, recursive)
   }
 }

src/main/java/com/maddyhome/idea/vim/extension/sneak/IdeaVimSneakExtension.kt

@@ -326,7 +326,7 @@ private fun VimExtension.mapToFunctionAndProvideKeys(
     VimPlugin.getKey().hasmapto(it, injector.parser.parseKeys(commandFromOriginalPlugin(keys)))
   }
   val filteredFromModes = mappingModes.filterNotTo(HashSet()) {
-    injector.keyGroup.hasmapfrom(it, fromKeys)
+    injector.keyGroup.getKeyMapping(it)[fromKeys] != null
   }
 
   val doubleFiltered = mappingModes

vim-engine/src/main/kotlin/com/maddyhome/idea/vim/api/VimKeyGroup.kt

@@ -61,8 +61,14 @@ interface VimKeyGroup {
   fun updateShortcutKeysRegistration()
   fun unregisterCommandActions()
   fun resetKeyMappings()
+
+  /**
+   * Returns true if there exists a mapping to the given left-hand side keystrokes
+   *
+   * Note that the Vim function `hasmapto()` can accept a set of modes, and checks if any mapping _contains_ the given
+   * left-hand side mapping, rather than is a direct map. (It also handles abbreviations)
+   */
   fun hasmapto(mode: MappingMode, toKeys: List<KeyStroke>): Boolean
-  fun hasmapfrom(mode: MappingMode, fromKeys: List<KeyStroke>): Boolean
 
   val shortcutConflicts: MutableMap<KeyStroke, ShortcutOwnerInfo>
   val savedShortcutConflicts: MutableMap<KeyStroke, ShortcutOwnerInfo>

vim-engine/src/main/kotlin/com/maddyhome/idea/vim/api/VimKeyGroupBase.kt

@@ -44,10 +44,6 @@ abstract class VimKeyGroupBase : VimKeyGroup {
     return this.getKeyMapping(mode).hasmapto(toKeys)
   }
 
-  override fun hasmapfrom(mode: MappingMode, fromKeys: List<KeyStroke>): Boolean {
-    return this.getKeyMapping(mode).hasmapfrom(fromKeys)
-  }
-
   override fun getKeyMapping(mode: MappingMode): KeyMapping {
     return keyMappings.getOrPut(mode) { KeyMapping(mode) }
   }

vim-engine/src/main/kotlin/com/maddyhome/idea/vim/key/KeyMapping.kt

@@ -135,7 +135,5 @@ class KeyMapping(private val mode: MappingMode) : Iterable<List<KeyStroke>>, Key
     mappingInfo is ToKeysMappingInfo && mappingInfo.toKeys == toKeys
   }
 
-  fun hasmapfrom(fromKeys: List<KeyStroke>) = keysTrie.getData(fromKeys) != null
-
   override fun getLayer(keys: List<KeyStroke>): MappingInfoLayer? = get(keys)
 }