Minor clean up

Remove an odd {1} repeat count, and remove the "."{DIGIT}+ pattern that is
already covered by the following {DIGIT}*"."{DIGIT}+ pattern.

Change-Id: If99dfe10a5e37225355472bf4deceb34c0a92eb9

idlc/source/scanner.l

@@ -359,8 +359,7 @@ published       return IDL_PUBLISHED;
                 return asciiToInteger(yytext, &yylval.ival, &yylval.uval);
             }
 
-("-")?{DIGIT}+(e|E){1}(("+"|"-")?{DIGIT}+)+(f|F)?	|
-("-")?"."{DIGIT}+((e|E)("+"|"-")?{DIGIT}+)?(f|F)?	|
+("-")?{DIGIT}+(e|E)(("+"|"-")?{DIGIT}+)?(f|F)?	|
 ("-")?{DIGIT}*"."{DIGIT}+((e|E)("+"|"-")?{DIGIT}+)?(f|F)?        {
                 yylval.dval = asciiToFloat( yytext );
 				return IDL_FLOATING_PT_LITERAL;