Retire notation.cpp

Now we can finally retire notation.cpp
and move UCI helpers under uci.cpp

No functional change.

src/Makefile

@@ -39,8 +39,8 @@ PGOBENCH = ./$(EXE) bench 32 1 1 default time
 
 ### Object files
 OBJS = benchmark.o bitbase.o bitboard.o endgame.o evaluate.o main.o \
-	material.o misc.o movegen.o movepick.o notation.o pawns.o \
-	position.o search.o thread.o timeman.o tt.o uci.o ucioption.o
+	material.o misc.o movegen.o movepick.o pawns.o position.o \
+	search.o thread.o timeman.o tt.o uci.o ucioption.o
 
 ### ==========================================================================
 ### Section 2. High-level Configuration