fix Bad Smells in spoon.pattern.PatternBuilderHelper

[laughing-train]

Repairing Code Style Issues

UnnecessaryToStringCall

The toString() method is not needed in cases the underlying method handles the conversion. Also calling toString() on a String is redundant. Removing them simplifies the code.

Changes:

• Remove redudant toString() call in body.toString()

• Remove redudant toString() call in body.toString()

[coveralls]

Pull Request Test Coverage Report for Build #414

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• 40 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.1%) to 87.123%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/main/java/spoon/pattern/PatternBuilderHelper.java	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/main/java/spoon/pattern/internal/PatternPrinter.java	1	94.26%
src/main/java/spoon/reflect/meta/impl/ModelRoleHandlers.java	12	92.61%
src/main/java/spoon/support/visitor/replace/ReplacementVisitor.java	27	96.79%

Totals
Change from base Build #408:	-0.1%
Covered Lines:	28308
Relevant Lines:	32492

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💛 - Coveralls