I want to make my macbook pro quicker

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I want to make my macbook pro quicker
My macbook pro had been slow for a couple of years now. And it has just got a whole lot worse.
I downloaded an app, which I thought was something else. It has now attached itslef to Google Chrome and is sending my contact sspam aswell as opening hundereds if popups throughout the day. I need to get this off my mac and I also need to get McAfee family protection off. Though there is no uninstall option for it.
I took my laptop to a genius bar and he said I needed to wipe the hard drive after transferring my files to another computer.
I can do this, but I don't want to transfer the programmes and fils that are causing me these problems!
I have an EtreCheck report below:
EtreCheck version: 1.9.12 (48)
Report generated 23 June 2014 15:37:16 GMT+01:00
Hardware Information:
  MacBook Pro (13-inch, Early 2011) (Verified)
  MacBook Pro - model: MacBookPro8,1
  1 2.3 GHz Intel Core i5 CPU: 2 cores
  4 GB RAM
Video Information:
  Intel HD Graphics 3000 - VRAM: 384 MB
  Color LCD 1280 x 800
System Software:
  Mac OS X 10.7.5 (11G63) - Uptime: 6 days 3:22:23
Disk Information:
  Hitachi HTS545032B9A302 disk0 : (320.07 GB)
  disk0s1 (disk0s1) <not mounted>: 209.7 MB
  Macintosh HD (disk0s2) / [Startup]: 319.21 GB (77.21 GB free)
  Recovery HD (disk0s3) <not mounted>: 650 MB
  HL-DT-ST DVDRW  GS31N 
USB Information:
  Apple Inc. BRCM2070 Hub
  Apple Inc. Bluetooth USB Host Controller
  Apple Inc. Apple Internal Keyboard / Trackpad
  Apple Inc. FaceTime HD Camera (Built-in)
  Apple Computer, Inc. IR Receiver
Thunderbolt Information:
  Apple, Inc. MacBook Pro
Kernel Extensions:
  [not loaded] com.ZTE.driver.ZTEUSBMassStorageFilter (1.3.1) Support
  [loaded] com.parentalctrl.kext.filter (4.0) Support
Startup Items:
  ParentalCtrl: Path: /System/Library/StartupItems/ParentalCtrl
Launch Daemons:
  [loaded] com.microsoft.office.licensing.helper.plist Support
  [running] com.MyBusinessWorks.backup.plist Support
  [running] com.vsearch.daemon.plist Support
  [not loaded] com.vsearch.helper.plist Support
Launch Agents:
  [loaded] com.hp.messagecenter.launcher.plist Support
  [running] com.kodak.BonjourAgent.plist Support
  [running] com.McAfee.McAfeeFamilyProtection.plist Support
  [running] com.MyBusinessWorks.status.plist Support
  [not loaded] com.vsearch.agent.plist Support
User Launch Agents:
  [loaded] com.adobe.ARM.[...].plist Support
  [loaded] com.google.keystone.agent.plist Support
  [loaded] com.kodak.KODAK AiO Annual Opt.plist Support
  [loaded] com.kodak.KODAK AiO Firmware Updater.plist Support
  [loaded] com.kodak.KODAK AiO Software Updater.plist Support
  [running] com.spotify.webhelper.plist Support
User Login Items:
  GrowlHelperApp
  iTunesHelper
  AutoLaunchApp
  Dropbox
  AdobeResourceSynchronizer
  CNQL1213_ButtonManager
Internet Plug-ins:
  JavaAppletPlugin: Version: 14.1.0 - SDK 10.7 Check version
  QuickTime Plugin: Version: 7.7.1
  AdobePDFViewerNPAPI: Version: 10.1.10 Support
  AdobePDFViewer: Version: 10.1.10 Support
  SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 Support
  AmazonMP3DownloaderPlugin101749: Version: AmazonMP3DownloaderPlugin 1.0.17 - SDK 10.4 Support
  iPhotoPhotocast: Version: 7.0 - SDK 10.8
Safari Extensions:
  Conduit Search for Safari: Version: 1.0
  AddThis: Version: 1.0
Audio Plug-ins:
  iSightAudio: Version: 7.7.1 - SDK 10.7
iTunes Plug-ins:
  Quartz Composer Visualizer: Version: 1.3 - SDK 10.7
User Internet Plug-ins:
  ConduitNPAPIPlugin: Version: 1.0 - SDK 10.6 Support
3rd Party Preference Panes:
  Growl  Support
  MyBusinessWorks  Support
Time Machine:
  Time Machine not configured!
Top Processes by CPU:
      5% MyBusinessWorksBackup
      3% WindowServer
      2% sefiltd
      1% mds
      1% McAfee Family Protection
Top Processes by Memory:
  233 MB Mail
  224 MB HP_Officejet_6500_E710n_z
  135 MB Google Chrome
  98 MB MailTab Pro for Gmail
  94 MB Finder
Virtual Memory Information:
  143 MB Free RAM
  2.03 GB Active RAM
  909 MB Inactive RAM
  963 MB Wired RAM
  5.63 GB Page-ins
  3.43 GB Page-outs
Please help
Repaly
I took my laptop to a genius bar and he said I needed to wipe the hard drive after transferring my files to another computer.
Agreed. Follow these instructions.
First back up your essential files and documents. To do that read Mac Basics: Time Machine backs up your Mac
Since you have no backup to rely upon, the backup that it will create will duplicate all the problems that now exist, so the option to restore your system from a backup date preceding any corruption is not available to you.
The recovery procedure will require that you erase the Mac using OS X Recovery, and then create a new user whose contents will be empty. You will then be able to use Setup Assistant to migrate your essential documents including photos and music.
When doing so, select only your previous User account and do not select "Applications", "Computer and Network Settings" or "Other files and folders". De-select those choices. Subsequent to using Setup Assistant, you will need to reinstall the essential software you may require, once again remembering to install software only from their original sources, and omitting all non-essential software.
To erase and install Mavericks read: OS X Mavericks: Erase and reinstall OS X
To migrate your essential documents read: OS X: How to migrate data from another Mac using Mavericks and follow the procedure under Time Machine or other disk migration.
May I suggest that you review the following setting in System Preferences?
Although you may easily override that setting, it will serve to protect you from inadvertently installing garbage.
Read More: The other 3 answers