Remove unnecessary maxProximityCharsSize

Change-Id: I8013004c1db2a4133795a0e41edea1a41b770cfd
diff --git a/native/jni/src/proximity_info.cpp b/native/jni/src/proximity_info.cpp
index 8157fe2..a0bad1a 100644
--- a/native/jni/src/proximity_info.cpp
+++ b/native/jni/src/proximity_info.cpp
@@ -110,8 +110,8 @@
         return false;
     }
 
-    const int startIndex = ProximityInfoUtils::getStartIndexFromCoordinates(
-            MAX_PROXIMITY_CHARS_SIZE, x, y, CELL_HEIGHT, CELL_WIDTH, GRID_WIDTH);
+    const int startIndex = ProximityInfoUtils::getStartIndexFromCoordinates(x, y,
+            CELL_HEIGHT, CELL_WIDTH, GRID_WIDTH);
     if (DEBUG_PROXIMITY_INFO) {
         AKLOGI("hasSpaceProximity: index %d, %d, %d", startIndex, x, y);
     }