[Core] Remove matrix_is_modified() and debounce_is_active() (#15349)

quantum/debounce/asym_eager_defer_pk.c

@@ -165,7 +165,6 @@ static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], ui
     }
 }
 
-bool debounce_active(void) { return true; }
 #else
 #    include "none.c"
 #endif

quantum/debounce/none.c

@@ -26,6 +26,4 @@ void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool
     }
 }
 
-bool debounce_active(void) { return false; }
-
 void debounce_free(void) {}

quantum/debounce/sym_defer_g.c

@@ -44,8 +44,6 @@ void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool
     }
 }
 
-bool debounce_active(void) { return debouncing; }
-
 void debounce_free(void) {}
 #else  // no debouncing.
 #    include "none.c"

quantum/debounce/sym_defer_pk.c

@@ -134,7 +134,6 @@ static void start_debounce_counters(matrix_row_t raw[], matrix_row_t cooked[], u
     }
 }
 
-bool debounce_active(void) { return true; }
 #else
 #    include "none.c"
 #endif

quantum/debounce/sym_eager_pk.c

@@ -140,7 +140,6 @@ static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], ui
     }
 }
 
-bool debounce_active(void) { return true; }
 #else
 #    include "none.c"
 #endif

quantum/debounce/sym_eager_pr.c

@@ -132,7 +132,6 @@ static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], ui
     }
 }
 
-bool debounce_active(void) { return true; }
 #else
 #    include "none.c"
 #endif