diff --git a/datchain/.idea/misc.xml b/datchain/.idea/misc.xml
deleted file mode 100644
index bdc94d8..0000000
--- a/datchain/.idea/misc.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" default="false" project-jdk-name="9.0" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/out" />
-  </component>
-</project>
\ No newline at end of file
diff --git a/datchain/.idea/modules.xml b/datchain/.idea/modules.xml
deleted file mode 100644
index 702b2f3..0000000
--- a/datchain/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/datchain.iml" filepath="$PROJECT_DIR$/datchain.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/datchain/datchain.iml b/datchain/datchain.iml
deleted file mode 100644
index e23119d..0000000
--- a/datchain/datchain.iml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module version="4">
-  <component name="NewModuleRootManager">
-    <output url="file://$MODULE_DIR$/out" />
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="fuzzywuzzy-1.1.10" level="project" />
-    <orderEntry type="module-library" scope="TEST">
-      <library name="JUnit5.0">
-        <CLASSES>
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.0.0/junit-jupiter-api-5.0.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.0.0/opentest4j-1.0.0.jar!/" />
-          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.0.0/junit-platform-commons-1.0.0.jar!/" />
-        </CLASSES>
-        <JAVADOC />
-        <SOURCES />
-      </library>
-    </orderEntry>
-    <orderEntry type="module-library">
-      <library>
-        <CLASSES>
-          <root url="jar://$MODULE_DIR$/lib/gson-2.8.4.jar!/" />
-        </CLASSES>
-        <JAVADOC />
-        <SOURCES />
-      </library>
-    </orderEntry>
-  </component>
-</module>
\ No newline at end of file
diff --git a/datchain/src/dk/aau/cs/a311c/datchain/Block.java b/datchain/src/dk/aau/cs/a311c/datchain/Block.java
index 039004e..3ebae9a 100644
--- a/datchain/src/dk/aau/cs/a311c/datchain/Block.java
+++ b/datchain/src/dk/aau/cs/a311c/datchain/Block.java
@@ -70,6 +70,4 @@ public boolean equals(Object o) {
     public int hashCode() {
         return Objects.hash(getIdentity(), getIdentityDOB(), getIdentityPublicKey(), getPrevHash(), getHash(), getTimestamp());
     }
-}
-
-
+}
\ No newline at end of file
diff --git a/datchain/src/dk/aau/cs/a311c/datchain/cryptography/SHA.java b/datchain/src/dk/aau/cs/a311c/datchain/cryptography/SHA.java
index 5533900..d756dec 100644
--- a/datchain/src/dk/aau/cs/a311c/datchain/cryptography/SHA.java
+++ b/datchain/src/dk/aau/cs/a311c/datchain/cryptography/SHA.java
@@ -15,7 +15,6 @@ public static String computeHash(String hashInput) {
         } catch (NoSuchAlgorithmException e) {
             System.out.println("ERROR: System does not support cryptographic hash algorithm: " + e.getMessage());
         }
-        //TODO might be redundant or not proper error-handling
         assert messageDigest != null;
 
         //get hashInput as bytes and update messageDigest