Ignore avoid_classes_with_only_static_members lint on existing classes (#363)

* remove unused ignores

analysis_options.yaml

diff --git a/analysis_options.yaml b/analysis_options.yaml
index 6401712..d5da7c3 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -26,4 +26,5 @@
   - prefer_expression_function_bodies
   - prefer_final_locals
   - unnecessary_await_in_return
+  - unnecessary_ignore
   - use_string_buffers

benchmark/matrix_bench.dart

diff --git a/benchmark/matrix_bench.dart b/benchmark/matrix_bench.dart
index 195b0c8..5150cb7 100644
--- a/benchmark/matrix_bench.dart
+++ b/benchmark/matrix_bench.dart
@@ -2,8 +2,6 @@
 // All rights reserved. Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// ignore_for_file: deprecated_member_use_from_same_package
-
 import 'dart:math' as math;
 import 'dart:typed_data';
 

lib/src/vector_math_operations/matrix.dart

diff --git a/lib/src/vector_math_operations/matrix.dart b/lib/src/vector_math_operations/matrix.dart
index 946a5ce..a04a62e 100644
--- a/lib/src/vector_math_operations/matrix.dart
+++ b/lib/src/vector_math_operations/matrix.dart
@@ -4,9 +4,9 @@
 
 part of '../../vector_math_operations.dart';
 
-// ignore: avoid_classes_with_only_static_members
 /// Static methods operating on 4x4 matrices packed column major into a
 /// Float32List.
+// ignore: avoid_classes_with_only_static_members
 class Matrix44Operations {
   /// Compute the determinant of the 4x4 [matrix] starting at [offset].
   static double determinant(Float32List matrix, int offset) {
@@ -275,9 +275,9 @@
   }
 }
 
-// ignore: avoid_classes_with_only_static_members
 /// Static methods operating on 4x4 matrices packed column major into a
 /// Float32x4List.
+// ignore: avoid_classes_with_only_static_members
 class Matrix44SIMDOperations {
   /// [out] = [A] * [B]; Starting at [outOffset], [aOffset], and [bOffset].
   static void multiply(

test/geometry_test.dart

diff --git a/test/geometry_test.dart b/test/geometry_test.dart
index e2803dd..1e73ff1 100644
--- a/test/geometry_test.dart
+++ b/test/geometry_test.dart
@@ -2,8 +2,6 @@
 // All rights reserved. Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// ignore_for_file: deprecated_member_use_from_same_package
-
 import 'dart:typed_data';
 
 import 'package:test/test.dart';

test/matrix4_test.dart

diff --git a/test/matrix4_test.dart b/test/matrix4_test.dart
index 71440a6..9bacbd0 100644
--- a/test/matrix4_test.dart
+++ b/test/matrix4_test.dart
@@ -2,8 +2,6 @@
 // All rights reserved. Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// ignore_for_file: deprecated_member_use_from_same_package
-
 import 'dart:math' as math;
 import 'dart:typed_data';
 

test/noise_test.dart

diff --git a/test/noise_test.dart b/test/noise_test.dart
index a8da042..3dde541 100644
--- a/test/noise_test.dart
+++ b/test/noise_test.dart
@@ -2,8 +2,6 @@
 // All rights reserved. Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// ignore_for_file: deprecated_member_use_from_same_package
-
 import 'package:test/test.dart';
 
 import 'package:vector_math/vector_math.dart';