Removed trailing spaces in the most relevant files

Command used for the job:
egrep -rl ' $' --include *.c --include *.h --include  *.s --include  *.inc --include  *.txt *  | xargs sed -i 's/\s\+$//g'

Credits to Grant Murphy from Stack Overflow.

sound/songs/se_m_sweet_scent.s

@@ -33,7 +33,7 @@ se_m_sweet_scent_1:
 	.byte	W12
 	.byte		PAN   , c_v-4
 	.byte		BEND  , c_v+5
-	.byte		N36   , Fn3 
+	.byte		N36   , Fn3
 	.byte	W12
 	.byte		PAN   , c_v+0
 	.byte		BEND  , c_v+6
@@ -172,7 +172,7 @@ se_m_sweet_scent_2:
 	.byte	W02
 	.byte		VOL   , 12*se_m_sweet_scent_mvl/mxv
 	.byte	W03
-	.byte		EOT   
+	.byte		EOT
 	.byte	FINE
 
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