removed unnecessary test files

...red_synthetic_10_reads_paired.remove_adapters_mate1.fastq

...red_synthetic_10_reads_paired.remove_adapters_mate2.fastq

...paired_synthetic_10_reads_paired.remove_polya_mate1.fastq

...paired_synthetic_10_reads_paired.remove_polya_mate2.fastq

...e_1_synthetic_10_reads_mate_1.remove_adapters_mate1.fastq

...mate_1_synthetic_10_reads_mate_1.remove_polya_mate1.fastq