Revert "improve minSdkVersion definition."

This reverts commit 80f9010c.

.travis.yml

@@ -9,6 +9,7 @@ before_script:
  - echo y | android update sdk --no-ui --all --filter extra-google-m2repository,extra-google-google_play_services
  - echo y | android update sdk --no-ui --all --filter build-tools-25.0.1
  - ./gradlew dependencies
+ - sed -i -e 's/minSdkVersion = 21/minSdkVersion = 17/g' dependencies.gradle
 
 script:
  - ./gradlew checkstyle findbugs pmd

android-ddp/build.gradle

@@ -27,11 +27,6 @@ android {
         versionName "0.0.8"
     }
     buildTypes {
-        debug {
-            defaultConfig {
-                minSdkVersion rootProject.ext.minSdkVersionDebug
-            }
-        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

app/build.gradle

@@ -50,11 +50,6 @@ android {
         }
     }
     buildTypes {
-        debug {
-            defaultConfig {
-                minSdkVersion rootProject.ext.minSdkVersionDebug
-            }
-        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

dependencies.gradle

@@ -5,8 +5,7 @@ ext {
     retroLambdaPatch = 'me.tatarka.retrolambda.projectlombok:lombok.ast:0.2.3.a2'
     compileSdkVersion = 25
     buildToolsVersion = '25.0.1'
-    minSdkVersionDebug = 21
-    minSdkVersion = 17
+    minSdkVersion = 21 //for accelerating multi-dex build. OVERRIDEN BY Circle CI to 17
 
     supportVersion = '25.0.1'
     supportAnnotations = "com.android.support:support-annotations:$supportVersion"

realm-helpers/build.gradle

@@ -29,11 +29,6 @@ android {
         versionName "1"
     }
     buildTypes {
-        debug {
-            defaultConfig {
-                minSdkVersion rootProject.ext.minSdkVersionDebug
-            }
-        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

rocket-chat-android-widgets/build.gradle

@@ -22,11 +22,6 @@ android {
         vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
-        debug {
-            defaultConfig {
-                minSdkVersion rootProject.ext.minSdkVersionDebug
-            }
-        }
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'