Code simplifications found by cppcheck

They are based on:
- Boolean arithmetic simplifications
- setting variables that are not accessed
- constant variables

4 files changed, 2 insertions, 11 deletions

diff --git a/editor/animation_bezier_editor.cpp b/editor/animation_bezier_editor.cpp
index af0c3fca5c..da75bf1f3b 100644
--- a/editor/animation_bezier_editor.cpp
+++ b/editor/animation_bezier_editor.cpp
@@ -944,9 +944,7 @@ void AnimationBezierTrackEdit::gui_input(const Ref<InputEvent> &p_event) {
 				Vector2 popup_pos = get_screen_position() + mb->get_position();
 
 				menu->clear();
-				if (!locked_tracks.has(selected_track) || locked_tracks.has(selected_track)) {
-					menu->add_icon_item(bezier_icon, TTR("Insert Key Here"), MENU_KEY_INSERT);
-				}
+				menu->add_icon_item(bezier_icon, TTR("Insert Key Here"), MENU_KEY_INSERT);
 				if (selection.size()) {
 					menu->add_separator();
 					menu->add_icon_item(get_theme_icon(SNAME("Duplicate"), SNAME("EditorIcons")), TTR("Duplicate Selected Key(s)"), MENU_KEY_DUPLICATE);
diff --git a/editor/import/audio_stream_import_settings.cpp b/editor/import/audio_stream_import_settings.cpp
index a8cd4c3e49..f635c74547 100644
--- a/editor/import/audio_stream_import_settings.cpp
+++ b/editor/import/audio_stream_import_settings.cpp
@@ -288,17 +288,15 @@ void AudioStreamImportSettings::_draw_indicator() {
 		float preview_len = zoom_bar->get_page();
 		float beat_size = 60 / float(stream->get_bpm());
 		int prev_beat = 0;
-		int last_text_end_x = 0;
 		for (int i = 0; i < rect.size.width; i++) {
 			float ofs = preview_offset + i * preview_len / rect.size.width;
 			int beat = int(ofs / beat_size);
 			if (beat != prev_beat) {
 				String text = itos(beat);
 				int text_w = beat_font->get_string_size(text).width;
-				if (i - text_w / 2 > last_text_end_x + 2 * EDSCALE && beat == _hovering_beat) {
+				if (i - text_w / 2 > 2 * EDSCALE && beat == _hovering_beat) {
 					int x_ofs = i - text_w / 2;
 					_indicator->draw_string(beat_font, Point2(x_ofs, 2 * EDSCALE + beat_font->get_ascent(main_size)), text, HORIZONTAL_ALIGNMENT_LEFT, rect.size.width - x_ofs, Font::DEFAULT_FONT_SIZE, color);
-					last_text_end_x = i + text_w / 2;
 					break;
 				}
 				prev_beat = beat;
diff --git a/editor/plugins/bone_map_editor_plugin.cpp b/editor/plugins/bone_map_editor_plugin.cpp
index 22c30c9af8..9ceedb18b3 100644
--- a/editor/plugins/bone_map_editor_plugin.cpp
+++ b/editor/plugins/bone_map_editor_plugin.cpp
@@ -742,7 +742,6 @@ void BoneMapper::auto_mapping_process(Ref<BoneMap> &p_bone_map) {
 		} else {
 			p_bone_map->_set_skeleton_bone_name("LeftEye", skeleton->get_bone_name(bone_idx));
 		}
-		bone_idx = -1;
 
 		bone_idx = search_bone_by_name(skeleton, picklist, BONE_SEGREGATION_RIGHT, neck_or_head);
 		if (bone_idx == -1) {
@@ -750,7 +749,6 @@ void BoneMapper::auto_mapping_process(Ref<BoneMap> &p_bone_map) {
 		} else {
 			p_bone_map->_set_skeleton_bone_name("RightEye", skeleton->get_bone_name(bone_idx));
 		}
-		bone_idx = -1;
 		picklist.clear();
 
 		// 4-2. Guess Jaw
diff --git a/editor/plugins/tiles/tile_data_editors.cpp b/editor/plugins/tiles/tile_data_editors.cpp
index ce176e3a99..42eceb82ab 100644
--- a/editor/plugins/tiles/tile_data_editors.cpp
+++ b/editor/plugins/tiles/tile_data_editors.cpp
@@ -2481,9 +2481,6 @@ void TileDataTerrainsEditor::forward_painting_alternatives_gui_input(TileAtlasVi
 
 						if (terrain_set == -1 || !tile_data || tile_data->get_terrain_set() != terrain_set) {
 							// Paint terrain sets.
-							if (mb->get_button_index() == MouseButton::RIGHT) {
-								terrain_set = -1;
-							}
 							drag_type = DRAG_TYPE_PAINT_TERRAIN_SET;
 							drag_modified.clear();
 							drag_painted_value = int(dummy_object->get("terrain_set"));