Remove 'Clear Path' button and translation keys

Deleted the 'Clear Path' button from the pathfinding component and removed its associated translation entries from both English and German i18n files.

src/app/pages/algorithms/pathfinding/pathfinding.component.html

@@ -14,7 +14,6 @@
       <button mat-raised-button color="accent" (click)="visualizeAStar()">{{ 'PATHFINDING.ASTAR' | translate }}</button>
       <button mat-raised-button color="warn" (click)="resetBoard()">{{ 'PATHFINDING.RESET_BOARD' | translate }}</button>
       <button mat-raised-button color="warn" (click)="clearBoard()">{{ 'PATHFINDING.CLEAR_BOARD' | translate }}</button>
-      <button mat-raised-button color="info" (click)="clearPath()">{{ 'PATHFINDING.CLEAR_PATH' | translate }}</button>
     </div>
 
     <div class="legend">

src/assets/i18n/de.json

@@ -303,7 +303,6 @@
     "ASTAR": "A*",
     "RESET_BOARD": "Board zurücksetzten",
     "CLEAR_BOARD": "Board leeren",
-    "CLEAR_PATH": "Pfad löschen",
     "VISITED": "Besucht",
     "PATH": "Pfad",
     "PATH_LENGTH": "Pfadlänge",

src/assets/i18n/en.json

@@ -303,7 +303,6 @@
     "ASTAR": "A*",
     "RESET_BOARD": "Reset Board",
     "CLEAR_BOARD": "Clear Board",
-    "CLEAR_PATH": "Clear Path",
     "VISITED": "Visited",
     "PATH": "Path",
     "PATH_LENGTH": "Path length",